There’s no easy answer to this question. On one hand it’s right that rewards for doing the right thing are not to be expected but on the other hand the professional has had a “working” flight and probably – in the above case- saved the airline time and money. The doctor could remain in his/her seat and keep quiet? I don’t think so. The airline should be grateful and at least offer some recompense. David does not say he expected a reward but 60 euros?? better not to bother than offer an insult. “Nothing tastes of nothing” as they say.