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:     What can I do for you today ?  
 Person2:  I need to return a book .  
 Person1:      Can I do anything else for you ?  
 Person2:  I want to check this magazine out .  
 Person1:      We don ’ t allow people to check out magazines .  
 Person2:  Why not ?  
 Person1:      It ’ s just a policy of ours .  
 Person2:  So what am I allowed to check out ?  
 Person1:      You may check out books or videos .  
 Person2:  I need to check out this magazine .  
 Person1:      You will have to just read it in the library .  
 Person2:  That doesn ’ t make any sense . 

1