What a powerful question.

Is there anything else I can do to help you today?

I tried it out, and got fantastic responses.

Person one:  Get me out of a committee I don't want to be on.
Person two:  Big questions about a close relationship with a person.  Suddenly I was invited into a very personal part of their life.
Person three:  Nothing much, I'm fine.  Thanks for asking, I'll let you know.

Sometimes it was a big job to do.  Mostly it was something small, but something important.  It was big to them, but not hard for me to help with.

I'll continue asking people and see what they say.  It's one of the best questions you can ask anyone!