Sample LuisIntent["Help"] for slack with channel data hydration

LuisHelpIntent.cs

 [LuisIntent("Help")]
        public async Task Help(IDialogContext context, IAwaitable<IMessageActivity> activity, LuisResult result)
        {
            var message = await activity;
            var reply = context.MakeMessage();
            reply.TextFormat = "markdown";
            reply.Text = @"You can try some of the below options
                          * find me sweaters
                          * do you have wallets
                          * show me yellow v - neck sweaters";


            var attachments = JArray.Parse(@"[{
      'fallback': 'Required plain-text summary of the attachment.',
      'color': '#36a64f',
      'pretext': 'Optional text that appears above the attachment block',
      'author_name': 'Bobby Tables',
      'author_link': 'http://flickr.com/bobby/',
      'author_icon': 'http://flickr.com/icons/bobby.jpg',
      'title': 'Slack API Documentation',
      'title_link': 'https://api.slack.com/',
      'text': 'Optional text that appears within the attachment'
}]", new JsonLoadSettings
            {
                LineInfoHandling = LineInfoHandling.Ignore,
                CommentHandling = CommentHandling.Ignore
            });

            dynamic channelData = new JObject();
            channelData.text = "This is a line of text.\nAnd this is another one.";
            channelData.attachments = attachments;
            reply.ChannelData = channelData;

            await context.PostAsync(reply);
            context.Wait(this.MessageReceived);
        }