request = GraphRequest.newGraphPathRequest(
                accessToken, "/" + conversation_id,
                new GraphRequest.Callback() {
                    @Override
                    public void onCompleted(GraphResponse response) {
                        // Insert your code here
                        Log.e("Response", response + "");
                        JSONObject jsonObject = response.getJSONObject();
                        if (jsonObject != null) {

                            String conversation_id = jsonObject.optString("id");
                            JSONObject conversation_object = jsonObject.optJSONObject("messages");

                            next = conversation_object.optJSONObject("paging").optString("next");
                            previous = conversation_object.optJSONObject("paging").optString("previous");

                            JSONArray data = conversation_object.optJSONArray("data");
                            if (data != null) {

                                for (int i = 0; i < data.length(); i++) {

                                    JSONObject object = data.optJSONObject(i);
                                    String message = object.optString("message");
                                    String created_time = object.optString("created_time");
                                    String message_id = object.optString("id");
                                    JSONObject from = object.optJSONObject("from");
                                    String from_name = from.optString("name");
                                    String from_id = from.optString("id");

                                    Model model = new Model();
                                    model.setConversation_id(conversation_id);
                                    model.setMessage(message);
                                    model.setMessage_id(message_id);
                                    model.setFrom_id(from_id);
                                    model.setFrom_name(from_name);
                                    model.setCreated_time(created_time);
                                    if (from_id.equals(page_id)) {
                                        model.setIs_page(true);
                                    } else {
                                        model.setIs_page(false);
                                    }
                                    arrayList.add(model);
                                }
                                adapter = new Page_Conversation_Send_Adpter(Page_Send_Conversation.this, arrayList);
                                recyclerView.setAdapter(adapter);
                                adapter.notifyDataSetChanged();
                                recyclerView.scrollToPosition(arrayList.size());
                            }
                        }
                    }
                });

        Bundle parameters = new Bundle();
        parameters.putString("fields", "messages{from,message,created_time}");
        request.setParameters(parameters);
        request.executeAsync();


{
    "id":"t_mid.1451223349751:29a5b9f29647937598",
    "messages":{
        "data":[
            {
                "from":{
                    "name":"EverGreen Associates",
                    "email":"554432738045284@facebook.com",
                    "id":"554432738045284"
                },
                "message":"hello i am sending message from application",
                "created_time":"2015-12-29T09:03:34+0000",
                "id":"m_mid.1451379814598:e7134068a264fd4061"
            },
            {
                "from":{
                    "name":"Pankaj Arora",
                    "email":"10205905497613544@facebook.com",
                    "id":"10205905497613544"
                },
                "message":"Yes i got your message",
                "created_time":"2015-12-27T17:09:37+0000",
                "id":"m_mid.1451236177136:13c782b85a1e0ef312"
            },
            {
                "from":{
                    "name":"EverGreen Associates",
                    "email":"554432738045284@facebook.com",
                    "id":"554432738045284"
                },
                "message":"Testing from Application if you get please reply",
                "created_time":"2015-12-27T17:09:06+0000",
                "id":"m_mid.1451236146909:8c0c770d19dbd76a97"
            },
            {
                "from":{
                    "name":"EverGreen Associates",
                    "email":"554432738045284@facebook.com",
                    "id":"554432738045284"
                },
                "message":"",
                "created_time":"2015-12-27T17:01:24+0000",
                "id":"m_mid.1451235684417:5f005334e5fc36c269"
            },
            {
                "from":{
                    "name":"EverGreen Associates",
                    "email":"554432738045284@facebook.com",
                    "id":"554432738045284"
                },
                "message":"",
                "created_time":"2015-12-27T17:01:23+0000",
                "id":"m_mid.1451235683641:135bce3776d3b93940"
            },
            {
                "from":{
                    "name":"EverGreen Associates",
                    "email":"554432738045284@facebook.com",
                    "id":"554432738045284"
                },
                "message":"",
                "created_time":"2015-12-27T16:54:31+0000",
                "id":"m_mid.1451235270927:3f21e6ca31f3bca052"
            },
            {
                "from":{
                    "name":"EverGreen Associates",
                    "email":"554432738045284@facebook.com",
                    "id":"554432738045284"
                },
                "message":"",
                "created_time":"2015-12-27T16:34:43+0000",
                "id":"m_mid.1451234082533:2696495c7b104d6a38"
            },
            {
                "from":{
                    "name":"Pankaj Arora",
                    "email":"10205905497613544@facebook.com",
                    "id":"10205905497613544"
                },
                "message":"got it",
                "created_time":"2015-12-27T13:37:05+0000",
                "id":"m_mid.1451223425939:3a960e07faa0d78732"
            },
            {
                "from":{
                    "name":"EverGreen Associates",
                    "email":"554432738045284@facebook.com",
                    "id":"554432738045284"
                },
                "message":"hello",
                "created_time":"2015-12-27T13:36:29+0000",
                "id":"m_mid.1451223389308:0d7549545b87297930"
            },
            {
                "from":{
                    "name":"Pankaj Arora",
                    "email":"10205905497613544@facebook.com",
                    "id":"10205905497613544"
                },
                "message":"Hello Dhaval Sir, how the things",
                "created_time":"2015-12-27T13:35:50+0000",
                "id":"m_mid.1451223349751:29a5b9f29647937598"
            }
        ],
        "paging":{
            "previous":"https:\/\/graph.facebook.com\/v2.5\/t_mid.1451223349751:29a5b9f29647937598\/messages?fields=from,message,created_time&access_token=CAAGTZCek8UwkBAEYmOqBLADRDijTXNUKbZCylJJqRe8QibvkXjyG1aOyKkl1MV2kpb7piFjqmbE1s1QloSvvCpO50tnP7Fj6F7qqrq12uYVZCqv9r9Ovd6PiMFYIrGvxk5Qxwcd2v26JSFaP56l8UQnYBwo7F7dbWVINbhBfstiqW02JSew&limit=25&since=1451379814&__paging_token=enc_AdBtr7gORiR2C0qzqZBjo8lGMQnSMS36H3ZA2rHbJJfLS3Yey3jyMK1ZCmTpd5RJp5lZAV32HAQVNsGlcuCEqB9UceSLZBcgHkfYnNXZA9ixdVfAFkNAZDZD&__previous=1",
            "next":"https:\/\/graph.facebook.com\/v2.5\/t_mid.1451223349751:29a5b9f29647937598\/messages?fields=from,message,created_time&access_token=CAAGTZCek8UwkBAEYmOqBLADRDijTXNUKbZCylJJqRe8QibvkXjyG1aOyKkl1MV2kpb7piFjqmbE1s1QloSvvCpO50tnP7Fj6F7qqrq12uYVZCqv9r9Ovd6PiMFYIrGvxk5Qxwcd2v26JSFaP56l8UQnYBwo7F7dbWVINbhBfstiqW02JSew&limit=25&until=1451223350&__paging_token=enc_AdBOHirUzZAZAYhtAz5d3VYFbmj3DEmyJduck44Ry2NynhLoMheFZBHu77uKZAEbzvtLKcg6aAVBWnvssFIqUwdTfaPnrrOY0XLTigX5Y2RSCX3wqAZDZD"
        }
    }
}