Alright, i have to admit the title isn't the greatest, but it was all I could think of.

Anyway here is my question. I am currently trying to book a multi-city "C" on UAL.com. The routing is MSP-FRA-CPH-LHR-MSP. The reason I am doing this is to get the most segments for the great offer, otherwise I would fly direct from ORD to CPH and back, with a weekend jaunt to London. When I get to the booking phase and select the flights, after indicating I want C i get some flights in C some in Y, B, or even W despite F,A,C, and D showing. Then when I go to the seat selection some flights booked in C come up as Y seats, of course the Y,B,W's come up as Y seats. Anyone have a clue why this is true? I am thouroghly confused, and don't want to call yet until I can get my dates finalized. thanks for your help.

Nathan