I remember one time as an 18 year old kid I had done OLCI 24 hours early flying on the lowest Y fare and getting to the check-in machines T-44 minutes (on the nose). Check-in machine gives an error (I only needed to print bag tag) so I go to line up in Check-in Assistance line.

An AC employee asks me what my problem is, I explain that I need an agent to print my baggage tag, and the line dragon tells me it's too late, go find the ticketing desk for help. Naive to the fact she was telling me to buy a new ticket, I go over to ticketing, realize everyone in that line is crying and that it's at least an hour long, so I come back and luckily a new Line Dragon is there. I explain again, he lets me in, and an AC agent working check-in yells that everyone on my flight to come into a separate line to fast track us.

Evidently AC had bumped me and oversold the flight anyway, so I was being rebooked to the next flight with no penalty. Had I listened to the first employee I would have probably missed the flight and foolishly bought a same-day ticket.

From the story, it seems the lady feels a similar sense of disillusionment. Luckily I haven't had any similar incidents since (nor have I flown Y in recent memory)