A. Frequent flight passenger B. Flight number C. Boarding time D. Starting airport E. Ground service F. Delayed flight G. Ticketing service H. Ticket delivery I. Online ticket booking J. Luggage check-in K. Self check-in service L. Seat selection M. Flight punctuality N. Ticket refund O. Baggage claim P. Baggage compensation Q. First class 1.( ) 行李托运 ( ) 登机时间 2.( ) 售票服务 ( ) 常客 3.( ) 始发机场 ( ) 航班延误 4.( ) 座位选择 ( ) 送票服务 5.( ) 行李提取 ( ) 航班号