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:     Hi , charlie , are you busy this evening ?  
 Person2:  Sorry , I'm afraid that I've got plans tonight .  
 Person1:      What are you doing ?  
 Person2:  I'm going to my parents ' house for my father's birthday .  
 Person1:      How old is he today ?  
 Person2:  It's his 50th birthday .  
 Person1:      Well , wish him a happy birthday for me .  
 Person2:  Sure thing . What are your plans for the evening ?  
 Person1:      I was just thinking of going to a movie tonight .  
 Person2:  Well , if you can wait until tomorrow night , I'll go with you then .  
 Person1:      Sorry , I've got people coming over tomorrow night .  
 Person2:  Sounds like this weekend just isn't going to work out for us .  
 Person1:      Sounds that way . Maybe some other time then ?  
 Person2:  Sure.Hey , I'm sorry , but I've got to get going .  
 Person1:      Yeah , me , too . It's about time I made a move .  
 Person2:  Say hello to your friends for me .  
 Person1:      Likewise . See you later .  
 Person2:  Bye ! 

1