This review is not only of one flight but the entire experience flying from Nashville to Bozeman and back in around 30hr. First, every flight but one was delayed "due to mechanical issues" .. are none of these planes fit to fly or are they using this as a generic excuse for allowing their entire schedule to fall apart through any given day. Would they lie to you? Yes!! Had a gate agent tell us to "run for it" 20 something gates away in Denver when she knew full well that our connecting flight had left, stranding us .. just pure evil. Sure the planes were packed, the food/drink service abysmal but what I want to concentrate on here were the personnel. In my working years I flew Southwest literally hundreds of times .. they had always been the friendliest, happiest folks in the sky. I don't know what happened to their corporate culture but EVERY agent we interacted with was rude, uncaring, bothered, not helpful and in at least one case, just pure evil. The flight crews were mostly curt and officious. The Southwest of the past is far in the past. It would be fitting for them to fold their tent and get out of the business because clearly they hate to fly and it shows.