Everything was fine, however, the terminal B in DFW was super hot, the plane was also hot. Sat on runway for at least if not longer than an hour. The same thing happened last time I flew out of DFW. Delays for take off for too many planes on the runway at one time. When the plane got up in the air it did cool down. One lady got sick because of the heat on the aircraft. Other than that, flight attendant was very nice and the pilots did keep up informed of what was going on. I will fly again. Thank you.