2. Refund procedures should be handled more than 24 hours before the flight takes off.

3. There is no flight delay after the ticket.

Passengers didn't buy tickets at the ticket office.

5. The customer service staff can only help the guests to cancel their seats. On the last page of the ticket, it is written that the guests applied for a refund at a certain point in a certain year, a certain month and a certain day, and at the same time stamped with the official seal.