In commercial aviation, what is the system where in-flight food or beverages are able to be purchases after being issue the document or electronic record by the airline?
Airline ticket An airline ticket is a document or electronic record, issued by an airline or a travel agency, that confirms that an individual is entitled to a seat on a flight on an aircraft. The airline ticket may be one of two types: a "paper ticket", which comprises coupons or vouchers; and an electronic ticket (commonly referred to as an "e-ticket").
Restaurant A restaurant ( or ; ] ), or an eatery, is a business which prepares and serves food and drinks to customers in exchange for money. Meals are generally served and eaten on the premises, but many restaurants also offer take-out and food delivery services, and some offer only take-out and delivery. Restaurants vary greatly in appearance and offerings, including a wide variety of cuisines and service models ranging from inexpensive fast food restaurants and cafeterias to mid-priced family restaurants, to high-priced luxury establishments.