功能：可以输入姓名查询自己的航班信息 可以订票，退票 可以增加航班（设置了密码） 几个函数功能的描述3 -functions : names can be imported to inquire about his flight booking information can be, Refund can increase the number of flights (with a password) Several

功能：可以输入姓名查询自己的航班信息 可以订票，退票 可以增加航班（设置了密码） 几个函数功能的描述3 -functions : names can be imported to inquire about his flight booking information can be, Refund can increase the number of flights (with a password) Several