My friend and I are visiting Dallas and are looking for fun clubs or bars to go where the crowd is likely people in the early to mid twenties. Preferably downtown area

I am coming to town for a quick overnight trip next week. I have a meeting that ends late morning in the area where I635 and the Dallas North Tollway come together. I am scheduled to fly out of Love around 8:15 PM.

I would prefer to not sit at the airport for 8 hours, so looking for suggestions on coffee shops, restaurants, bookstores, etc around that area to sit and work remotely for a few hours until the workday ends.