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:     Good afternoon , Mrs . Brown . I've come to see Mr . Brown .  
 Person2:  Good afternoon , Mr . Green .  
 Person1:      Is he in ?  
 Person2:  I'm sorry , but he's not in , he's gone out on business .  
 Person1:      Oh ! I just drop in on him for a chat .  
 Person2:  Please come in for a cup of coffee .  
 Person1:      No , thank you . Please tell him to phone me when he comes back . 

0