Airline reservations are the process of booking a seat on a flight operated by an airline. Customers can make reservations through various channels, including online websites, mobile apps, or by contacting travel agents. The reservation typically includes details such as the traveler's name, flight dates, and destination. Once a reservation is made, travelers receive a confirmation, which includes a unique booking reference number. This number is essential for checking in and managing the reservation. Changes or cancellations can often be made, depending on the airline's policies and the type of ticket purchased.