I booked a specific seat on a train. I don’t mind where I sit really but don’t want to stand. I got on the train, it’s really busy with people standing. The person that was in my seat is a child (11-13 ish) I asked her to move (very nicely) but then looked around and spotted one other empty seat further down the carriage. I said I’d sit there but when I went to the seat it was next to a man who is very dirty and smells. I came back to my booked seat, the child’s mother gave the child her seat and I’m sat in my booked seat. WIBU? I feel a bit awkward.