private async void Speak(string textToSay)
 {
     _reduxStore.Dispatch(new SpeechStartedMessage(textToSay));
     try
     {
         await _speechServices.SayAsync(textToSay).ConfigureAwait(false);
     }
     finally
     {
         _reduxStore.Dispatch(new SpeechFinishedMessage(textToSay));
     }
 }