I did encounter a NRSA who was a friend of a UA employee of over 10 years and was denied F seat from ewr to ord as the GA claimed the cabin checked in full but wasn't when the door closed. She was a bi-polar sufferer and felt it was only decent to help her through security and guested her to wait in the United club and got her breakfast as well. She wore jeans, boots and nothing out of the ordinary and was dressed decently but treated shabily by the GA.
She had excellent manners and did not once give the impression " i deserve this and this".