My flight home

Ok. The plane from CS to Denver was on time and all was fine. It was packed as usual. We left CS at 10:15 am. Got into Denver for the flight to Sioux Falls. That flight left right on time at 1:04 pm. About half way through the flight the pilot gets on the intercom and announces we are turning back to Denver. There was a problem with the pressurization of the cabin. Big problem at 65000 feet, -10f degrees. We got back to Denver and they "found" us a new plane which was leaving around 3:30. Not too bad but there it is. The flight attendant was very nice, filling my wine glass from the first class bottle (3 times no charge). A little tipsy getting into Sioux Falls, but happy too.