1）、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）

2）、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；

3）、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；

4）、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。

5）、修改航班信息：

当航班信息改变可以修改航班数据文件

-1), record to go into:

Can record into a service condition(the data can store at one piece according to document, data structure, concrete data from settle)

2), search:

Can search the condition of a certain route (such as, input service, search cuts time, hopoff arrive a city, service ticket price, ticket price rebate, recognize service whether full bin)Can input a hopoff to arrive a city, search airplane service condition

3), book a ticket:(Booking a condition can exist one piece according to document, the structure sets by himself/herself)

Can book a ticket, if the service have already had no ticket, canning provide correlation can select a service

4), refund: Can refund, the returned check modifies a related data document behind

Customer s data contains name, chitty, book amount of vote and service condition, the order has to have serial number.

5), modify a service information