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:     May I help you ?  
 Person2:  I would like to check out these books .  
 Person1:      May I see your library card , please ?  
 Person2:  Yes . Here you go .  
 Person1:      Apparently , you have unpaid late fees .  
 Person2:  I do ?  
 Person1:      You owe some money .  
 Person2:  Exactly how much do I owe ?  
 Person1:      You owe $ 24.50 .  
 Person2:  I won ’ t be able to pay that right now .  
 Person1:      Until you pay it , you can ’ t check out books .  
 Person2:  I will pay it . Don ’ t worry . 

1