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 date is it today ?  
 Person2:  Why ?  
 Person1:      Look at the girls in the street . They all have a bunch of flowers.Is it Valentine's Day ?  
 Person2:  Oh , yes ! I completely forgot about it .  
 Person1:      Did you have a fight with Jack ?  
 Person2:  No , but now he'll be in trouble . What's a boyfriend for ? To forget about Valentine's Day ?  
 Person1:      Come on , dear ! You forgot it , too .  
 Person2:  You know , it's OK for a girl to forget these " big days " , but for a guy , to do that is unforgivable .  
 Person1:      Is that your phone ?  
 Person2:  Oh , it's Jack . Excuse me .  
 Person1:      Wow ! Good timing .  
 Person2:  He asked me out to a dinner tonight . How about joining us ?  
 Person1:      Come on ! Three's a crowd !  
 Person2:  So what ?  
 Person1:      Just go ! It's Valentine's Day ! 

1