Weird thing going on with an award here... A couple of guys trying to book the same award, each out of their own accounts. Flights are on SK, and both UA and AC are showing 5 seats available. Book one, and suddenly all others are gone. A few days later the same thing - multiple seats available, and after a single booking the rest disappear.
The first booking was made on UA and the second on AC, if that matters. We still have plenty of time to book, and there are some alternatives if need be, but it still seems a bit weird. What gives?