If your booking is done directly with a Chinese Airliners or a China-based travel agent, you can request for the booking PNR/ticket number and check the reservation at travelsky (as above), alternatively some airliners such as CZ do provide PNR verification page on their websites. If you book it with any other GDS, you should be able to retrieve that booking via the respective GDS. Alternatively, you can call up your travel agent/in your case, your *A airline who book your tickets to retrieve the CA PNR (i.e. Travelsky PNR) and verify it accordingly. Any ticket numbers that contain a Chinese airliner segment will work on the travelsky site.