$1,000 does not sound like true full fare first (I.e. F class http://www.cwsi.net/m/united.htm http://www.cwsi.net/m/united.htm), but my real guess is they had

$1,000 does not sound like true full fare first (I.e. F class http://www.cwsi.net/m/united.htm http://www.cwsi.net/m/united.htm), but my real guess is they had a global services customer they needed to get on the plane and this had paid less or had lower Frequent flyer status than the rest of the cabin