Jamester:

Technically, the FF account holder must present the certificate to a DL ticketing office (or airport ticket counter) and get the actual ticket issued in the gift recipient's name.

That said, if the gift recipient is on a well known basis with a DL employee who tickets, said gift recipient could have the transaction handled through such friendship.

SECOND IDEA:

FF account holder sets up a reservation for the gift recipient as an E-ticket reservation. Points are used to "pay" for the ticket from account holder's account or from cashing in the paper certificate.
Gift recipient simply has to show up at the airport from where his/her journey begins with drivers license in hand.