Unfortunately by default for Rent/Book Now section we used only simple contact form (Contact addon). That's why we strongly recommend for profrssional purposes to use extra solution:

1. Additional installed component/module.
   Useful booking and reservation manager for Joomla you can find here: https://extensions.joomla.org/category/vertical-markets/booking-a-reservations/
   OR
2. Link to external online reservation system (available in many languages).
   An online booking system is a software you can use for reservation management. Booking systems are what’s called software as a service (SAAS). Everything is stored in the cloud so you can manage your reservations on any device, anywhere you need to.
   Check those solutions: https://www.capterra.com/reservations-software/
   and https://www.checkfront.com/rentals