 Social seating is currently available with a few airlines, notably the flag carrier airline of the Netherlands whose hub is located where?
KLM: KLM Royal Dutch Airlines, legally "Koninklijke Luchtvaart Maatschappij N.V.", is the flag carrier airline of the Netherlands. KLM:  KLM is headquartered in Amstelveen, with its hub at nearby Amsterdam Airport Schiphol.
i don't know