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 do you think of smoking ? 
 Person2:  It's harmful . Not only for yourself but for others . 
 Person1:      What in your opinion can be done to stop smoking ? 
 Person2:  Stop producing cigarettes . 
 Person1:      But that'll affect the national economy . 
 Person2:  That's right.But I don't think there are better ways . 
 Person1:      How about printing a warning on each cigarette packet ? 
 Person2:  Maybe it can take effect . 

1