public async Task <IActionResult> Listen()
        {
            var speech = new SpeechHelpers(cognitiveServicesSettings);
            await speech.Listen();

            return(Ok());
        }
        public IActionResult TalkAsync(string text)
        {
            var speech = new SpeechHelpers(cognitiveServicesSettings);

            Task.Run(() => speech.Speak(text));

            return(Ok());
        }