What is the code uniquely identifying an air reservation in the airline system?

• A. Booking code
• B. Reservation number
• C. Record locator number
• D. Ticket number

Answer: (C)

The key idea here is that airlines use a concise, unique identifier to pull up a specific booking in their system. This is the record locator number, typically a six-character alphanumeric code that ties directly to that Passenger Name Record (PNR) and its flight segments. It’s designed to be unique to that reservation, letting agents and passengers access the exact itinerary easily.

The other terms aren’t the same: a booking code usually refers to the fare class or pricing within a booking, not the whole reservation itself; a reservation number is an older term that some systems use for the booking reference but isn’t universally the identifier across carriers; a ticket number identifies the issued ticket, not the entire reservation.