Well, here’s some more probably outdated/useless info (that’'s what you get for being gracious and thankful). All of the following is thru 40 year old, rose tinted glasses.
If the Mansion restaurant is still around, they’ve got the best wine list of any restaurant I’ve imbibed at, or eaten in, in the Western Hemisphere, including LA. They were pricey, and trying very hard to be pretentious, but amazing ('53 [the best champagne I’ll probably ever taste] and '59 Dom) wines that were actually printed on the wine list (probably no longer, so you’ll have to ask).
Regardless of where you want to go, where your satnav directs you, or some crazy mexican on the corner directs you, never, NEVER, EVER get on 75 on a weekday, unless you love parking. 
If you want lobster, and absolutely nothing else, go to the Palm. But positively do not eat anything else off of their menu.
For more moderate, or actually, less outrageous fare, the Atlantic Cafe on McKinney can fill the bill. Despite the nautical name, their apps, non-seafood entrees and desserts were excellent. Their steaks were great quality, cooked to perfection (even rare), and the waitroids were way beyond reproach.
Regardless of the name, (Atlantic Cafe, Cafe Pacific, etc.), do not order seafood in Dallas, or any city that far from the coast. When I was there, it tasted like cardboard, no matter the price, or claims of freshness (flown in daily/hourly/by the order). I had the pleasure/curse of living in New Orleans, which is the queen of fresh seafood and the king of complementary spices, so no other seafood on the planet is going to pass muster. BTW, New Orleans is also the king/queen of crime, so don’t bring money, nice accoutrements (unless you really don’t need that wrist / finger), or a car to the city.
Dallas is a beef/Tex-Mex city, and well deserved. You may find the original Chilli’s (where they probably still serve in frigging plastic baskets) off of Greenville Ave near a hospital, or the first On the Border restaurant near the south end of Highland Park. You may also find the not-so-original Tony Roma’s, that I thought was a “Dallas born restaurant”. I later learned that it was only “legitimatized” in Dallas.
Regardless of where you want to go, where your satnav directs you, or some crazy mexican on the corner tells you, never, NEVER, EVER get on 75 on a weekday … unless you love parking.
Again, all of this is antiquated. The last time that I was in the city, outside of DFW, was 1989.
With the advent of supposed global warming, it is probably too hot to risk standing outside for your photos. 
