In my experience, Atlanta and Dallas are always hyper and very curt.

Hmmm...I did my commercial/instrument training at Corsicana, Tx.
(Navarro College) and made regular forrays to Love field (Southwest's
home). I loved the sprawling metropolis, especially at night, and the
tour of downtown Big D approaching Love was always a treat.
I was never under the impression that Dallas was hyper or curt,
although maybe they were and that's all I had experience with at the
time.
Going to Love seemed easy, just call regional approach shortly after
departure from Corsicana and do what they tell you...

Ricky