/// <summary>
/// function for invoking bot
/// </summary>
private static void StartVoiceBot()
{
//get speech converted to text
Task <string> response = StartSpeechToText();
Console.WriteLine("You said : " + response.Result);
//pass the question to QNA service and retrive response
Task <string> answer = GetAnswerFromQnAService(response.Result);
//pass back the answer to speeker
TextToSpeech textToSpeech = new TextToSpeech();
textToSpeech.CovertTextToSpeechFromMicrophone(answer.Result.ToString()).Wait();
}
