Originally Posted by
milypan
I assume this can only be done via UA ticketing? I.e. you cannot ask a *A partner call center (specifically, TK) to book an extra seat as part of an award booking, even if you instruct them to use "EXTRASEAT" as the second name.
EXTRASEAT has worked for me by just booking it myself on united.com with the correct name for the extraseat (fake) passenger. I've done it using either EXTRASEAT or EXST as first name, with my same last name, and it worked both ways. I assume if TK books the extra seat that way, it would work also, but that's just speculation.