the primary job of the flight attendant is in case there is an emergency, they will be the ones to assist the passengers to safety. they are the last ones to go out of the plane. kaya nga may training sa kanila na 1st aid, swimming laps, etc. that's for the emergency cases.

secondary na lang yung pagseserve ng food etc. kesa naman nakatunganga lang sila dun sa loob ng plane. so, if you're not satisfied on how they serve you, don't get angry. that's not their real job there