Join Date: Aug 2011
Location: Barcelona, London, on a plane
Programs: IB+ Gold, TK E+, Hyatt Globalist, Marriott LTP, IHG Diamond
Posts: 14,186
How long ago did your friend book?
U class used to be Premium Economy / Comfort Class, which came with additional luggage allowance. Now that Comfort Class no longer exists, you cannot book it.