Hummmm..... I guess its a random thing with CO. I had a flight EWR-PHX in Nov which I had made 2 weeks ago. When I went to enter the details on the CO itinery page a note came up to call CO. It turns out they cancelled my 2:30pm flight outbound, and changed my return to an hour earlier. When were they going to notify me of this information (assuming I didn't go on their web site)??