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:     I haven't seen Bill lately . How is he ?  
 Person2:  He's still pretty sick .  
 Person1:      That's too bad . What does he have ?  
 Person2:  We don't know , but he's going to the doctor tomorrow .  
 Person1:      Let me know if there's anything I can do .  
 Person2:  Thanks a lot . I'll tell him . 

1