answer: #Person1# helps #Person2# and #Person3# order dessert and drink.
documents: #Person1#: What will you have for dessert? 
  #Person2#: Well, what do you have? 
  #Person1#: Cakes, fruit and ice cream. 
  #Person2#: Give me ice cream and a piece of cake. 
  #Person3#: I will have a cake and fruit. 
  #Person1#: OK. And which would you like to drink, coffee or tea? 
  #Person2#: I prefer tea. 
  #Person3#: I want coffee. 
  #Person1#: Thank you. Please wait a minute.