I understand that this may give you a bit of joy, but I beg you to reconsider randomly talking to people on the street. I know you're trying to judge whether fo

I understand that this may give you a bit of joy, but I beg you to reconsider randomly talking to people on the street. I know you're trying to judge whether folks are open to it based on body language, but you need to understand that people who start conversations with strangers tend to be socially awkward and potentially dangerous. There's a reason strangers don't talk to each other. Folks are conditioned to respond to these people without acting scared or unwilling because they don't want to be physically or verbally attacked. This is especially true for women. You may think that someone is open, but for some of them, they're actually scared of you. Your bit of joy is their bit of fear. Even your initial anecdote shows you're missing some social clues. Service workers don't want to talk to you. They're paid to interact with you. Yes, some may be extroverts and enjoy having a conversation. Others may dread folks starting long awkward conversations that they have no way to escape. There's socially acceptable places to have conversations with strangers. Bars (to a point), social activities meant for socializing, hobby communities, etc. This is a way better way to get social interaction, and one where you're going to generally have more rewarding interaction as people are there for that reason and are open to it.