Originally Posted by Cymro

You can always search, but the rooms may not yet be available. When this happens, the hotel shows as sold out. In general, rooms do come on stream but I had this situation in Chicago and six months later, still nada...

Edit: if you use flexible dates and search for available dates, you'll see when rooms are available. In this case, you can book from the 19th to the 26th - so ~355 days out.

Try again in a week or two - prices are currently in the $300s before Christmas, which is good for that hotel, believe it or not.