b747 flightboy
Before making your sarcastic remarks, did you pause to think that PERHAPS the lady had spent some considerable thought and time selecting her seat in the first place, and POSSIBLY for very good reasons. PERHAPS the alternative seat WAS inconvenient for her. PERHAPS she was a frequent flyer and recognised the aircraft POSSIBLY from the registration. PERHAPS she was just a little pi$$ed off with the attitude of the check-in staff.
Whatever the reasons, the tone of your remarks were not what I would expect from a professional.