Definition: You are given a conversation between two people. 'Person1:' and 'Person2:' are used to separate their respective dialogues. If the conversation begins with a question, label it '1' otherwise '0'.
Input:  Person1:     Can I get you any dessert ?  
 Person2:  Yes , I'd like to try the blueberry pie .  
 Person1:      Excellent choice . ( He brings her the pie . After she finishes , the waiter comes back . ) Would you like anything else ?  
 Person2:  No , I'm stuffed . I'm ready for the check .  
 Person1:      Here you are . Thank you and have a nice evening .  
 Person2:  Thank you . 

1