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

-can find a route (for example, the importation of flight, take-off and landing time inquiries, arrived in town to take off, flight fares, fare discounts, to determine whether the flight Mancang); can import arrived in town to take off, inquiries flights; booking : (booking situation may exist a data file, the structure of their own creation) could booking, if the flight has no vote, can provide the option of flights; Refund : Refund available, a refund after the revision of relevant data files; Customer information name, documents, booking flights and the number of orders have numbered. Revised flight information : when the flight information can be amended to change flight data files