Student or Learner
I notice that if someone says he/she is sick or a his/her relative has passed away,
the other person will probably says "I am sorry to hear that ..."
How about this case? Someone's flight was canceled, and he finally came back a day later and tired. Is it ok to use the "I am sorry to hear that.."?
or any better expression? Thanks.
Yes, you can use it for any unfortunate situation. A flat tire, a sick relative, a death in the family, a job loss, or burglary, etc.
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.