title: Create SAPUI5 XML Chat Dialog
body: <p>I want to create the chat dialog but without popover and I am totally have no idea. How do I achieve that?
  I found one great example from SAP blog: <a href="https://blogs.sap.com/2018/07/05/implementing-a-chatbot-custom-control" rel="nofollow noreferrer">https://blogs.sap.com/2018/07/05/implementing-a-chatbot-custom-control</a>. But I want to implement it without pop-over, basically I want to have a chat dialog box on the flat panel.</p>