FlyerTalk Evangelist
Join Date: Nov 2018
Location: Istanbul, Turkey
Programs: TK Elite Plus,BAEC GGL,ITA Executive, AFKL Gold,QR Gold,HH Diamond,Bonvoy Gold,ALL Gold
Posts: 14,185
It's possible for some airlines and some routes and the main cardholder must be traveling in order to purchase your ticket online.
If you're booking for someone else, you would need to find a willing hotline agent or contact a sales office.