answer: #Person2# wants a strawberry pie but there's none, so he orders a vanilla ice cream.
documents: #Person1#: Sir, would you like some dessert now? 
  #Person2#: Please show me the menu again. 
  #Person1#: Here you are. sir, the chocolate cake is very delicious. 
  #Person2#: No, thanks. I don't like chocolate. I'd like strawberry pie. 
  #Person1#: I am afraid there is none. 
  #Person2#: Then I'll have vanilla ice cream. 
  #Person1#: Fine. I will bring it right away.