Five-Sixty by Wolfie?
Mr Scagnetti called it right, call 'em. I think Open table gets a limited number of tables. Call the main number for a reservation 214.741.5560, I just did and got a 9:00 reservation. Or call the concierge at the Hyatt for faster service, there can be some hold time with the restaurant line.
I like the suckling pig, the lacquered duck and General Tso quail.