A booking reference is a unique code assigned to a reservation, such as for a flight, hotel, or rental car. This code helps both the customer and the service provider easily identify and manage the booking. It typically consists of a combination of letters and numbers. When you make a reservation, you will receive your booking reference via email or text. You can use this code to check your booking details, make changes, or cancel your reservation. It is important to keep this code safe, as it is essential for accessing your travel itinerary or accommodation details.