answer: #Person2# tells #Person1# the limit for drink sales is four per family and #Person1# thinks it's a bargain.
documents: #Person1#: Excuse me.
  #Person2#: Yes? How can I help you?
  #Person1#: Are these drinks on sale this weekend?
  #Person2#: Yes.
  #Person1#: Can I buy more than one case?
  #Person2#: Yes. The limit is four per family.
  #Person1#: Okay, I'll take four, please. You saved me a lot.
  #Person2#: I know. This is a really good bargain.
  #Person1#: Thanks.
  #Person2#: No problem.