Originally Posted by
Roka
But I've heard or read that people could buy multiple seats for the same flight, for example if they were larger and wanted two seats. Is that not right? I realize my situation isn't quite analogous.
Extra seat for comfort can only be booked in the same PNR (reservation) in the same class. After all, how will an extra seat in a different class cabin help you?

I have no experience with Asiana on extra seat. I know for some others, extra seat must be booked as Mr Roka/Extraseat for second seat in the same booking.