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:     Eric , how long will you be in China ?  
 Person2:  I don't know . Well , my contract here is for one year , and I don't know what I should do after that . Maybe going around for a while .  
 Person1:      Well , have you ever thought about learning some Chinese ?  
 Person2:  Actually , I am learning that now . But it's too hard for me . You know the four tones and the stuff . It really freaks me out .  
 Person1:      Don't worry . All things are difficult before they are easy .  
 Person2:  You hit the nail right on the head .  
 Person1:      Well , are you invested in some language-exchange program ?  
 Person2:  What is it ?  
 Person1:      It's where I teach you Chinese , and in exchange you teach me English .  
 Person2:  Awesome . I've been giving this a lot of thought . When can we do this ?  
 Person1:      How about this sunday ?  
 Person2:  Ok , cool .  
 Person1:      Good . I'll give you a call tonight .  
 Person2:  No problem .  
 Person1:      Bye . 

1