A few years ago, on board a flight from Los Angeles to New York, a group of young girls wore nothing but jeans and T-shirts — in the middle of winter. They didn’t speak English, and they didn't speak to each other the entire flight. I remember thinking it was odd, but I didn't know what to do about it.
My mother, a retired flight attendant, once had a man on board a flight traveling with a teenage girl. They didn’t look like they were related, and they weren’t friendly with each other either.