She sat next to the annoying guy on the plane. Then they fell in love
https://edition.cnn.com/travel/article/chance-encounters-airplane-romance-new-york-california/index.html
The chance to get in good terms with someone lies elsewhere.
Though this story is an extreme example, it's possible to speak to a next passenger, and to be in good terms with him/her. Unless the passenger rejects to talk with strangers, there is a chance to be a friend.
