now airport and departing time can be displayed on UI correctly
fix a bug that airline display error on UI

Signed-off-by: jsxhhyf <jsxhhyf@gmail.com>
modify the lable to display two flight info
add a messagebox when book successfully

Signed-off-by: jsxhhyf <jsxhhyf@gmail.com>
fix a bug that can't query a particular class of ticket

Signed-off-by: jsxhhyf <jsxhhyf@gmail.com>