An online booking engine works by plugging into your hotel website and processing secure online reservations made through the website. The data is then passed onto your property management system so you can access and manage the bookings.

A booking is the arrangement that you make when you book something such as a hotel room, a table at a restaurant, a theatre seat, or a place on public transport. I suggest you tell him there was a mistake over his late booking. Synonyms: reservation, date, appointment, engagement More Synonyms of booking.