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 would like to return this book .  
 Person1:      Is that all you need ?  
 Person2:  I also want to check out this video .  
 Person1:      Is that all you would like to check out ?  
 Person2:  That ’ s all I need .  
 Person1:      Do you have your library card ?  
 Person2:  Here it is .  
 Person1:      Make sure to take proper care of this video .  
 Person2:  That won ’ t be a problem .  
 Person1:      If you damage the video , you will be fined .  
 Person2:  I won ’ t damage it . 

1