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:     How have you been ?  
 Person2:  Fine , thank you .  
 Person1:      And how ’ s everyone in your family ?  
 Person2:  Very well , thank you . I ’ m meeting my wife and daughter for lunch at 12 , would you care to join us ?  
 Person1:      I ’ d love to but I ’ m afraid I can ’ t . I ’ Ve already got a lunch engagement . 

1