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:     Hey Bobby . What's going on ?  
 Person2:  Just taking a smoke break .  
 Person1:      I forgot my cigarette today . Do you have another one ?  
 Person2:  Sure . Here you go .  
 Person1:      Thanks .  
 Person2:  I didn't know you smoked .  
 Person1:      Really ? I've been smoking for over a year now .  
 Person2:  Oh . You're new to smoking still . I've been smoking for 7 years .  
 Person1:      You ever tried to quit ?  
 Person2:  Many times . I'm really addicted . It's harder to stop than you think .  
 Person1:      Yeah . I tried to quit last month , and I thought it was going to be easy , but it turns out that I'm still smoking .  
 Person2:  I highly recommend you quit soon . The longer you smoke , the harder it becomes to quit .  
 Person1:      I think you're right . Aright . Gotta go to class . Thanks for the cigarette . I'll talk to you later .  
 Person2:  No problem . I'll talk to you later . 

1