I just downloaded and installed it. For starters, I've never once heard it "ding." Does it even do that? Anyways, I clicked on the special offer and it said: Omaha to Chicago Midway for $32! - Fare is valid for travel September 1 through October 31, 2005 only But when I click on "Book Now," the only dates in the drop down box are Aug. 29th - Sep. 4th. Is Ding! only for lats minute fares?