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:     Steven , have you ever met Hanson ever since he went back to London ?  
 Person2:  No , but we still stay in touch .  
 Person1:      What's the way you keep in contact ?  
 Person2:  We contact through email .  
 Person1:      Email is not always the best form . I think QQ is way better .  
 Person2:  Your words sound a bit reasonable . But don ’ t forget the time difference .  
 Person1:      You're right . 

1