The letter you opened sounds like you’ve lucked out in a big way. It’s an offer for free plane tickets to practically anyplace you want to go. The company — whose name appears to be that of a well-known airline — urges you to act quickly, or you might miss this “last chance.” They even sent a “voucher” for the tickets.
Seems like all you have to do is call the toll-free number on the letter and you’ll soon be flying off to your desired destination. The offer has a deadline, though, so you’d better call now, right?