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:     Excuse me . Is there any body here ?  
 Person2:  Yes .  
 Person1:      I've finished up all my water . I would kill for a sip of water .  
 Person2:  Sure , come on in .  
 Person1:      Thank you very much . Are you here alone ?  
 Person2:  My father and sister are out to photographing . What about you ?  
 Person1:      I'm a back-packer from America .  
 Person2:  What is a back-packer ?  
 Person1:      It means a hiker who loves traveling around the world .  
 Person2:  Cool . You must have been to a lot of places .  
 Person1:      Yes , actually almost half of all the countries over the world . I love traveling places .  
 Person2:  So cool . I want to be a back-packer when I grow up .  
 Person1:      You can do it . But do work hard on your English to make it easier .  
 Person2:  I'll try my best . 

1