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:     So , where are you going to spend your winter vacation ?  
 Person2:  Oh , I ’ m going to meet my girlfriend in Thailand .  
 Person1:      You have a girlfriend in Thailand ? Interesting . How come I have never heard of that ?  
 Person2:  Actually it will be my first time to meet her .  
 Person1:      You mean you haven ’ t seen her before ? Then , how could she be your girlfriend ? Maybe you don ’ t even know her .  
 Person2:  That ’ s true . But we have known each other over the Internet for a few months now . Actually we are on an intimate level . We even plan to be engaged next month .  
 Person1:      Congratulations ! It ’ s good to follow your heart . But I just didn ’ t expect to be so fast .  
 Person2:  The Internet is making interaction much faster . People are getting to know each other much more quickly this way .  
 Person1:      Probably you ’ re right . 

1