Rude Passenger, Professional Gate Attendant, Laughing Crowd

"A lesson for all employees who work with rude customers!"
That's A Bloke (undated)

"An award should go to the Virgin Airlines gate attendant in Sydney for being customer focused, while making her point when confronted with a passenger who probably deserved to fly as cargo....

This is one of the better-written versions of a story I've read several times: always unauthenticated. Most of them, including this one, ring true, but are probably apocryphal. There's a pretty good discussion of this sort of story at: "Obnoxious Passengers" (Snopes.com)