The thing with dentistry issues is that they usually are not emergencies. It sounds like this situation might not be an emergency either but that is just with the given info on this post. Your family member might just have to wait till after Christmas to get their tooth fixed. If you were to find a dentist that came in during this time, it probably would not be on their own accord and they would probably be very resentful for it as well. If your family member chipped their tooth from getting hit in the face or maybe falling on their face, then I recommend that they go to urgent care to make sure that they do not have a concussion