This is the offer my wife received.
Silver Medallion or 15,000 bonus miles.
We want to be your number-one airline, and here's something special that will make the choice really worth your while. It's an offer that goes far beyond the ordinary.
Fly One, Choose One is a special offer for a very select group of customers, starting November 15, 2004. Fly just one flight in any fare class on any Delta, Delta Connection®, Delta Shuttle®, or Song® flight, and you'll reward yourself with either:
Silver Medallion® status through February 2006, with exclusive privileges like complimentary upgrades, priority boarding, preferred seating, and a 25% mileage bonus.
OR
15,000 bonus miles, good toward Award Travel and upgrades throughout the extensive Delta network and on any carrier within the SkyTeam® Alliance, including Northwest Airlines® and Continental Airlines®.
This is one of the most generous offers we've ever made...and we're offering it to you because we want Delta to be your first choice for air travel. All you have to do is enroll online and fly one qualifying flight by January 31, 2005. For more details, see below for Terms & Conditions.
Don't pass up this special opportunity to fly an airline with so much to offer. Enroll now, then take your next flight on Delta and receive your Silver Medallion status or 15,000 bonus miles.
Link
Fly One, Choose One Promotion