Originally Posted by bajrbajr

It might be that AC doesn't have availability that day, and since CO doesn't serve the destination you get that message.

try calling CO... maybe they can find seats that don't show on CO.com

BTW... I just returned from FRA on AC in the front cabin, (Executive Class they call it) and it was very nice. The privacy of the seat pods is fantastic. The food was good, but the AVOD selection was only fair.