First off, I today was at SFO and I wanted a flight to LAX -I first went to American -to see about cost (you see I was using travelers checks) they basically told they couldnt sell me a ticket unless I first called their reservation line to book a flight (when I first just wanted to check their prices from SFO-Lax *before I took their flights.. when I was ALREEDY AT THE TICKETING AREA.. finally got answer but the agent was rude.. so I decied not to give my business to American so I remember Frontier just started service from SFO to LAX and so I found their ticketing area, and they were very happy to help me (and cost was even cheaper 129.00 (and I had a good flight -fast too (it arrived 15 mintues early as well) so I was wondering why American gave me such a hassle when Frontier didnt. as a walk up