missing segment
 

I'm booked a flight with several segments. When viewing the reservation and seat selector from my account, I find there is a segment missing. I printed the receipt and it has all the segments and seats listed. I tried selecting seats anyway, but it never took. A couple of times, the seats assigned would show and other times, nothing would show. The times are messed up in my itinerary. Should I be worried?

Yes, you should be worried. Call co.com web support line 800-300-1547 and have them sorted it out for you.