Asking others polite questions about themselves is a great way for your child to learn about them and look for common interests for building friendships. (verywellfamily.com)
You can do this too early in the call and you can't be an interview factory, but polite questions relevant to your topic are appropriate. (inc.com)
You can expect polite questions when checking - in, going through customs, and boarding plans at the airport. (thoughtco.com)