False... 12000 posts and you post incorrect info still?
What? Are you claiming that you can make a reservation for a Tango fare and hold it for three days without issuing the ticket?
For both Tango and flex fares: "TICKETING MUST BE COMPLETED WITHIN 1 DAY AFTER
RESERVATIONS ARE MADE OR AT LEAST 10 DAYS BEFORE DEPARTURE
WHICHEVER IS EARLIER."
So clearly you cannot hold for three days...