I usually go to the “little” DMV here, where folks are still mostly country, and willing to help. I always make it a point to be polite and say something by way of a complement, especially if the clerk is looking harried. Telling a woman that a particular color looks good on her, or telling a guy I root for the same team as the shirt he is wearing, will go a long way to making the visit go faster.
Some folks, on the other hand, are just plain nasty, no matter how hard you try to be pleasant.
Little things like that sure can go a long way in just abuot every aspect of life. That’s the right way to be.