I think they do this when they need help if someone gets lost and has no access to a map or GPS.
Then the best way to get your bearings is to ask for directions.
In this situation.
You need to bite the bullet and asked a stranger.
Another would be if they get bored while wage for something.
I can tell you.
The number of times.
I've had to start a conversation, while waiting for the doctor to arrive.
Some also strike up the courage to talk to people.
They don't know at conferences or meetings where a lot of many people are involved.