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:     Mr.Ben , What do you think of the book ?  
 Person2:  It's an excellent one . I like it very much .  
 Person1:      Why ?  
 Person2:  It includes a lot of useful words and phrases .  
 Person1:      I agree with you . 

1