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 help you ?  
 Person2:  Have you got the latest ONXIU magazine ?  
 Person1:      Yes , but it's checked out .  
 Person2:  What a pity ! I missed it again .  
 Person1:      It's popular you know . You want to reserve it ?  
 Person2:  Yes , please .  
 Person1:      Fill out this form and we will send you a note when we get the book .  
 Person2:  Thank you . What shall I do when I check out these books ?  
 Person1:      Take the card , and fill in your name and library card number .  
 Person2:  Thank you so much . 

1