function sendMessage(recipient, payload, accessToken) {

    return axios.post(baseURL + 'v2.11/me/messages/?access_token=' + accessToken,
        Object.assign({}, {
            messaging_type: "RESPONSE",
            recipient: {
                id: recipient
            }
        }, payload) );
}

let async_actions;
let promise_chain = Q.fcall(function(){});
async_actions = flow['messages'].map(message => {
    return sendMessage(recipient, message['payload'], flow['page']['accessToken'])
});


async_actions.forEach(async_action => {
    //console.log(async_action)
    promise_chain = promise_chain.then(f);
});