male flight attendants were not engaging. I passed one ( The only one on the flight with facial hair) who look straight ahead is if he did not see me, as if he were looking through me in fact. I said hello to acknowledge his rudeness as well as to acknowledge him. Then and only then did he say hello to me. He behaved this if he were tired of saying hello to customers who didn’t respond so, like a sulking, teenager he refused to speak until I spoke. It was silly and unprofessional. Otherwise the flight was very nice. It would be super if TAP Portugal offered vegan options un either a snack or dessert – – neither were available.