There might be no window seat on your flight schedule. (11, 12 & 32 row)There might be non recline seats on your flight schedule. (14, 15, 16, & 32 row)At the same time as the cancellation of the trip, additional services will be canceled.Additional service can not be changed or canceled separately.Refund Regulations on Additional ServiceBefore 4 days of departure : refund availableBefore 3 days of departure - departure date : refund unavailable