I once flew alone from Spain as a child and got registered as requiring assistance (due to being a child) There was an old blind lady on the flight with me. Somehow, they mistakenly thought that I was blind, and that the old lady I guess was just old. So they were dragging me around and saying all sorts of confusing things to me in Spanish, putting my hands on things etc. it was a weird experience for me, but probably worse for the poor lady. Eventually the confusion was resolved at the gate with some staff member saying to me in English “you can see me, yes?” While right in front of me. I was very confused, wondering if it was a trick question, but eventually we stumbled into understanding what had happened.