answer: #Person1# asks #Person2# for a change. #Person2# refuses.
documents: #Person1#: Excuse me. Can I have change for a dollar, please?
  #Person2#: Sorry, but I can only give you change if you buy something.
  #Person1#: But I only have a dollar on me, and all I need is four quarters.
  #Person2#: Sorry, but I don't make the rules.