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 know that John isn't going to come back to our school ?  
 Person2:  Really ? Why ?  
 Person1:      He had moved and held a party on July 1st .  
 Person2:  It's a pity that I was traveling around Europe at that time .  
 Person1:      Even he's not coming back to school anymore , you still can call him and meet him on weekends .  
 Person2:  You're right ! I will call him this weekend and meet him . 

1