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:     How may I help you ?  
 Person2:  I need to return these books .  
 Person1:      What happened to this one ?  
 Person2:  The cover came off .  
 Person1:      You ’ re going to need to pay for the damage .  
 Person2:  How much are you talking ?  
 Person1:      It ’ s going to be $ 5 .  
 Person2:  That ’ s not bad at all .  
 Person1:      It really isn ’ t .  
 Person2:  Here you go .  
 Person1:      Thank you very much .  
 Person2:  You ’ re welcome . Have a nice day . 

1