public async Task SendHelpString(IDialogContext context, LuisResult result)
        {
            await context.PostAsync(await ChitChatService.SendHelpString());

            context.Wait(MessageReceived);
        }
        public async Task DismissBot(IDialogContext context, LuisResult result)
        {
            await context.PostAsync(await ChitChatService.DismissBot());

            context.Wait(MessageReceived);
        }
        public async Task GreetPerson(IDialogContext context, LuisResult result)
        {
            await context.PostAsync(await ChitChatService.GreetPerson());

            context.Wait(MessageReceived);
        }