I had to wait for 40min after reaching the gate in Atlanta for the aisle chair to be located and the staff to use it. There were also 6-8 old people who wanted to use wheelchairs so I had to wait for all of them to be helped off the flight. In Atlanta, I had to carry my bags myself as no one was there to help. I'm a paraplegic so I must use my wheelchair for all movement. My guess is that the old people who walked off the plane to use wheelchairs requested help.