My daughter was visiting her college roommate in Hong Kong. Her itinerary YYZ-HKG on AC was without issue. Return itin was HKG-PEK-YYZ. The HKG-PEK segment on Air China was cancelled without any notice to her/me. After being on phone with clueless agent and then downright nasty supr, the only thing he would do was to offer LH-HKG>FRA>MUC overnight, US-MUC>PHL>YYZ. Sure, send my 20 yr old daughter around the world because US wouldnt help in any other way.... Question, why didnt the "supervisor" book her in any available fare? Wouldnt that be a proper thing to do?? Turns out the flight was cancelled before she even left!!!