answer: #Person2# tells #Person1# #Person2# can't eat anymore because #Person2# ate some cookies before dinner.
documents: #Person1#: You have to finish your dinner before you leave the table.
  #Person2#: But, Mom, I can't eat anymore. I'm stuffed.
  #Person1#: What's the matter? It doesn't taste good?
  #Person2#: It's not that I don't like your cooking, but I ate some cookies before we had dinner.