Question: I'm struggling with my TA today. They are attempting to book a ticket KIX - PEK - YVR - YYZ on Air China for KIX - YVR and AC to YYZ. I'm booked in M on Air China (KIX-YVR) They've booked me into Tango (T) for YVR-YYZ. Ive requested Flex, but the response from my TA is that "the validating carrier, Air China has no combinable fares that allow to use the flex fare". . Could this be?