Even after booking if you do not return back to the “Thank You” page then here is the step that you can follow to set the “Thank You” page.
After the activation of the WP Travel Pro plugin go to Admin Panel > WP Travel > Settings > General
In the “Thank You Page” option choose the page that you have created to set as the thank you page. Also, you need to make sure that the Thank you page should be created by adding the shortcode as mentioned below:
Note: The Thank you page setting will only be available after the activation of the WP Travel Pro plugin.