Welcome to FT, BaseBoy.

JP is the airline designator for Adria Airlines, which is part of the Miles & More (Lufthansa Group) frequent flyer scheme. Do you mean Japan Airlines maybe?

In any case, miles are usually not transferable, and 15,000 won't be enough (I suspect) to purchase a flight for someone so you should look into ways of extending them.

Edit: scottpenderson is right, Jet Airways. My latter statement still stands, I believe.