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 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