Air Ticket Differences Among Infant, Children and Adult

How is the age range of infant, child and adult?

Infant: children under age of 2 (excluded 2-year-old)
Child: children between age of 2 and 12 (excluded 12-year-old)
Adult: people above 12-year-old

How about the tickets charge of each group?

Infant ticket:
1) 10% price of adult ticket
2) No seat (if you want a seat for your baby, you need to buy a child ticket)
3) Each adult passenger carrying an infant, more than 1 infant need to buy children tickets for the rest ones

Child ticket:
1) 50% price of adult ticket
2) Seat offered
Note: If your child's 12 birthday is Sept 12, and your air ticket departure date is Sept 13. Your child need to pay adult ticket, not child ticket.

Adult ticket:
1) 100% price of adult ticket