Was on LAX to ORD today and they pre boarded a severly handicapped child with parents. GA comes back out and calls for a Pax, I am 4 or so back for the FC boarding and over hear the GA asking this guy if he would move from 6B to 5D so family can all sit in same row with dad sitting in 6B, daughter in 6C and mom in 6D. Guy was using very low voice, but end result was Pax in 6B would not move.