Interesting...I asked a CK agent on the phone if it were be possible to open up space on an intl itinerary for an all-Y regional jet flight to complete a Saver award. She was more than happy to do it and said she needed to complete the request, but it would take 24 hours for someone in headquarters to look at it. After 72 hours, no response so I canceled the award and booked on another airline. When I called back after 72 hours, she said they hadn't looked at it yet (the flight was within 24 hours from that 72 hour mark, which I found odd). A simple no, not possible from RM would have been preferred than no answer at all.