public async Task Logout(IDialogContext context, LuisResult result)
        {
            context.Cleanup();
            await context.Logout();

            context.Wait(this.MessageReceived);
        }
        private async Task OnLogoutRequested(IDialogContext context, IAwaitable <bool> confirmation)
        {
            var result = await confirmation;

            if (result)
            {
                context.Cleanup();
                await context.Logout();
            }

            context.Wait(this.MessageReceived);
        }