Cathay Pacific Manage Booking feature is an online service that allows passengers to access and modify various aspects of their flight reservations. Through the airline's official website, travelers can log in to their booking using the booking reference or e-ticket number and the passenger's last name. Once logged in, passengers can review and update their personal details, select seats, request special meals, add extra services, and make changes to their flight itinerary, if allowed by the fare rules. The "Manage Booking" feature provides a convenient and user-friendly platform for passengers to customize and enhance their travel experience with Cathay Pacific.