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:     What's your opinion about childless couples ? Will you choose to have no kids ?  
 Person2:  To be honest , I wouldn't .  
 Person1:      Why ? Do you have to make a choice now ?  
 Person2:  Not really . But it has puzzled me for a long time .  
 Person1:      What's the puzzle ?  
 Person2:  My husband and I prefer to have no kids , but my mother-in-law is very traditional and wants grandkids .  
 Person1:      Oh , I see . I think the older generation tend to think in a different way .  
 Person2:  Yes . It seems she can never accept a childless marriage . We had a fight last night .  
 Person1:      Oh , really ? Maybe she is just eager to see her grandchildren .  
 Person2:  But it's absolutely our own business to have a child or not .  
 Person1:      Definitely .  
 Person2:  You know , I often overhear our neighbor , the young couple , fighting about how to raise their kid and I really don't want kids to spoil our happiness .  
 Person1:      Don't worry . I think in most cases , children are the glue that keeps a family together .  
 Person2:  I guess you're right . But I still prefer to have no child .  
 Person1:      Sure . You can fully enjoy your time together . 

1