Introduction - If you have any usage issues, please Google them yourself
1. problem description
Design a flight information query and retrieval system.
2. demand analysis
(1) each record includes 8 items: the flight flight number, starting point, end point station, schedule, departure time, arrival time, aircraft type, fare;
(2) inquire and retrieve the flight information specified by the user according to the different keywords.
(3) the input and output modules are required.