When a meeting is created that conflicts with another meeting on the Room calendar, is it possible to have the conflicting meeting forwarded to a delegate for a manual resolution?
Check the settings on the Room Account. There should be an option to not allow conflicting meetings, make sure it's checked. Also check to see that you don't have any and/or all users in the "Out of Policy" meeting requests section. If it's supposed to be an Auto-accept style room you'll want that section to be cleared.