录入：可以录入航班情况（数据可以存储在一个数据文件中，数据结构、具体数据自定）

查询：可以查询某个航线的情况（如，输入航班号，查询起降时间，起飞抵达城市，航班票价，票价折扣，确定航班是否满仓）；

可以输入起飞抵达城市，查询飞机航班情况；

订票：（订票情况可以存在一个数据文件中，结构自己设定）

可以订票，如果该航班已经无票，可以提供相关可选择航班；

退票：可退票，退票后修改相关数据文件；

客户资料有姓名，证件号，订票数量及航班情况，订单要有编号。

修改航班信息：当航班信息改变可以修改航班数据文件

-Entry: You can input flight conditions (data can be stored in a data file, data structure, specific data from the set)

Enquiries: You can query a route (such as, enter the flight number, the query time taking off and landing, taking off from the city, flight fares, fare discounts, to determine whether the full-flight position)　

You can enter to take off from the city, check flight conditions　

Reservations: (booking conditions for the existence of a data file, structure, set their own)

Can book your tickets, if the flight has been without a ticket, you can choose to provide flight　

Refund: Refund available, a refund after the revision of the related data files　

Customer information with names, identification number, booking number and flight conditions, the order must be numbered.

Modify Flight Information: Flight information changes when the flight data files can be modified