private static async Task <IMessageActivity> CreateGraphReply(IDialogContext context, string name = "")
{
var uri = await ConversationState.GetGraph(name);
var repl = context.MakeMessage();
repl.Text = "Please find current graph of sentiments";
repl.Attachments = new Attachment[] {
new Attachment(contentType: "image/jpeg",
contentUrl: uri, thumbnailUrl: uri)
};
return(repl);
}