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:     This is the good life ! We have it good don ’ t you think ?  
 Person2:  Yeah of course ! Although , don ’ t you ever wonder what “ could have been ” ?  
 Person1:      What do you mean ?  
 Person2:  Well , sometimes I think of how things could have turned out if I had done things a little differently .  
 Person1:      For example ?  
 Person2:  Like for example , if I hadn ’ t studied architecture , I would have become an artist like I wanted to .  
 Person1:      I see . Yeah now that I think of it , I wouldn ’ t have gotten married if I hadn ’ t moved to this town and met Sally .  
 Person2:  You see ! Everything happens for a reason ! We wouldn ’ t even have met if I hadn ’ t been in that car accident ten years ago !  
 Person1:      Well , I have no regrets !  
 Person2:  I ’ ll drink to that ! 

1