My siblings and I would like to find a nice restaurant in Dallas where we could reserve a private room to celebrate my parents 50th anniversary. I haven't lived there in over 25 years, so I'm no longer familiar with the area. There will be about 15 of us. We would like something classic, quiet,and sophisticated, where we could expect to pay $50-60/person for appetizer, entree and dessert. Thanks for any help you can give me.