What should I do if I book an adult ticket and a child ticket at the same time?

Hello, are you talking about air tickets? There are two options for carrying children and carrying infants under the departure time of the air ticket. For train tickets, just add the passenger location and enter the child's ID number and other personal information. The system will automatically calculate the total fare based on the child fare. <br/>If it can help you, please click the green 'Accept', thank you.