public async Task Speak(string text)
        {
            var speechConfig = SpeechConfig.FromSubscription(cognitiveServicesSettings.SpeakSdkKey, cognitiveServicesSettings.SpeakSdkRegion);

            // Creates a speech recognizer.
            using var synthesizer = new SpeechSynthesizer(speechConfig);
            using var result      = await synthesizer.SpeakTextAsync(text);

            if (result.Reason == ResultReason.SynthesizingAudioCompleted)
            {
                WriteLine($"Speech synthesized to speaker for text [{text}]");
            }
            else if (result.Reason == ResultReason.Canceled)
            {
                var cancellation = SpeechSynthesisCancellationDetails.FromResult(result);
                ConsoleHelpers.PrintCancellationReason(cancellation.Reason.ToString());
                if (cancellation.Reason == CancellationReason.Error)
                {
                    ConsoleHelpers.PrintCancellationError(cancellation.ErrorCode.ToString(), cancellation.ErrorDetails);
                }
            }
        }
        public async Task Listen()
        {
            var speechConfig = SpeechConfig.FromSubscription(cognitiveServicesSettings.SpeakSdkKey, cognitiveServicesSettings.SpeakSdkRegion);

            // Creates a speech recognizer.
            using (var recognizer = new SpeechRecognizer(speechConfig))
            {
                WriteLine("Say something...");

                // Starts speech recognition, and returns after a single utterance is recognized. The end of a
                // single utterance is determined by listening for silence at the end or until a maximum of 15
                // seconds of audio is processed.  The task returns the recognition text as result.
                // Note: Since RecognizeOnceAsync() returns only a single utterance, it is suitable only for single
                // shot recognition like command or query.
                // For long-running multi-utterance recognition, use StartContinuousRecognitionAsync() instead.
                var result = await recognizer.RecognizeOnceAsync();

                // Checks result.
                if (result.Reason == ResultReason.RecognizedSpeech)
                {
                    WriteLine($"We recognized: {result.Text}");
                }
                else if (result.Reason == ResultReason.NoMatch)
                {
                    WriteLine($"NOMATCH: Speech could not be recognized.");
                }
                else if (result.Reason == ResultReason.Canceled)
                {
                    var cancellation = CancellationDetails.FromResult(result);
                    ConsoleHelpers.PrintCancellationReason(cancellation.Reason.ToString());
                    if (cancellation.Reason == CancellationReason.Error)
                    {
                        ConsoleHelpers.PrintCancellationError(cancellation.ErrorCode.ToString(), cancellation.ErrorDetails);
                    }
                }
            }
        }