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:     Do you surf online regularly , Joe ?  
 Person2:  Of course . I stay online for four hours at least every day .  
 Person1:      Are you crazy ? What are you doing four hours online ?  
 Person2:  Millions of things . I surf the Net , check my e-mail , and most importantly , I chat with my friends .  
 Person1:      Online chat ? Aren't you afraid of meeting bad people who pretend to be what they are not ?  
 Person2:  No , I am not . And I love to meet new people in the chat rooms who share a lot in common with me .  
 Person1:      It sounds interesting . 

1