public async Task MessageReceivedAsync(IDialogContext context, IAwaitable <object> result)
        {
            var message = await result as Activity;

            int length = (message.Text ?? string.Empty).Length;

            await _chat.PostAsync(context, $"You sent {message.Text} which was {length} characters");

            context.Wait(MessageReceivedAsync);
        }
        public async Task None(IDialogContext context, LuisResult result)
        {
            string message = string.Format(BotResponses.RootLuisDialog_None, result.Query);

            await _chat.PostAsync(context, message);

            context.Wait(this.MessageReceived);
        }