Originally Posted by
enviroian
I've had zero luck booking any flights online the last few days. I would get all the way up to the purchase page, then click purchase, then get an error message asking me to call tech support. I did everytime and had to start from scratch

Apparently CO is trying to integrate UA flight numbers into their system and it's reaking havoc (according the person I was speaking to).
I can't make any changes to reservations either. Error message again.
yep. Same here. Tried to book a UA flight on CO's web site (which, for some reason shows L class availability whereas on the UA's website L class is not available) earlier today and got the same error message. The agent at CO Elite Desk also could not book this fare either. So while the flight shows up as available on Co.com, it is not bookable (because in reality the class of service is not available), hence the error message to call Electronic Support Desk.