Live Agent post chat page

Live agent post chat page allows you to share the details with customers at the end of a chat session. For example, you can direct your customers to another
Web page after they complete a chat with an agent, or forward them to a survey about their chat experience. You can create a Visualforce page to host your post-chat page, or you can develop a page on your own and add the URL to your chat
button configuration.

Now go and update the chat button and automated invitations”post chat page ” as shown below with the visual force page your created.

Once chat is ended which will display the result as shown below.insted of showing the simple chat details even you can build your own logic like sending automatic post chat surveys or feedback etc by using post chat pages.