class DoTextRequestTask extends AsyncTask<String, Void, AIResponse> {
    private Exception exception = null;
    protected AIResponse doInBackground(String... text) {
        AIResponse resp = null;
        try {
            final AIConfiguration config = new AIConfiguration("6d138f04d3dc45b1bc15f81741b05da1",
                    AIConfiguration.SupportedLanguages.English,
                    AIConfiguration.RecognitionEngine.System);
            resp = AIService.getService(this, config).textRequest(text[0], new RequestExtras());
            // might depend on you implementation ; find out how to
            // retrieve the AIService instance and replace "aiDialog.getAIService()"
        } catch (Exception e) {
            this.exception = e;
        }
        return resp;
    }
    protected void onPostExecute(AIResponse response) {
        if (this.exception == null) {
            // todo : handle the exception
        }
    }
}