>[! info] A "ticket" represents the customer's itinerary with each flight represented as a segment. The Ticket is stored in the Passenger Name Record or PNR which defines Data is stored or cleared by a GDS; Sabre or Amadeus The ticket fields are - Ticket number: unique - PNR tied to the ticket - [[Booking Class]] : F (Full), A | J, R, I, D | W (Full), P | Y (Full), H K M L , V G S, N Q O, B (Basic) - Origin and Desitination - Each Flight Segment - Operating carrier for each segment - Base Fare, Taxes - FOP