Airport employees are annoying

Currently stuck in line at united airlines kiosk at sea-tac airport. So one person tells me ya just go to that booth and check in on the touch screen ones (since I have no checked bags) so I go to check in. I do everything and am told that I need to talk to somebody to check in, because I am flying to canada.. So I go to talk to the same lady and she is like “oh sorry you have to wait in the checked bags line” “but I don’t have any bags to check” I say. She says sorry and leaves.. Now I am waiting in and insanely long line to not check my bags. Fuck you United Airlines..