Booking Engine: Add Custom Header Code for Specific Pages (Not General on All Pages)

Hi, I am looking to add a specific code to the header of the booking confirmation page on the booking engine to be able to track who completes a checkout from Google ads. Currently, we are able to add the code under settings to all pages but I only want to track that single confirmation page so it would be great to be able to edit the "Head Script" for each page individually.