Missing Stewardess

One of my patients missed an appointment the other day. We called her cell and her home and there was no answer. When she finally called us back a few days later, she explained that her flight from Europe was delayed a day. We asked why. She said that the stewardess never showed up and there was no one to replace her, so Air France cancelled the flight. I have never heard of something like that. No one was able to run into work and help out?