 }
 
 extension DialogflowViewController: AudioControllerDelegate {
+    //Microphone start listening
     func startListening() {
         listening = true
         audioButton.setImage(#imageLiteral(resourceName: "CancelButton"), for: .normal)

        _ = AudioController.sharedInstance.start()
    }
    
    func stopListening() {
        audioButton.setImage(#imageLiteral(resourceName: "Mic"), for: .normal)
        keybordButton.isEnabled = true

        let keyboardFrame =
            (notification.userInfo?[UIKeyboardFrameEndUserInfoKey] as! NSValue).cgRectValue
        textFieldBottomConstraint.constant = -keyboardFrame.height
        
    }
    
    @objc func keyboardWillHide(notification: NSNotification) {
