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 ! I'm Hong lei . What's your name ?  
 Person2:  Hello , Hong Lei . My name's Ricky .  
 Person1:      Hi Ricky . Are you a new student here ?  
 Person2:  Yes , I had my first lesson this morning . Are you a new student too ?  
 Person1:      No , I've been here for six months .  
 Person2:  Six months . That's a long time .  
 Person1:      It's not so long really . What class are you in ? Intermediate or ... ?  
 Person2:  Intermediate Three . And what about you ?  
 Person1:      I'm in Advanced One . Who's your teacher ?  
 Person2:  I can't remember her name , but she's got curly red hair .  
 Person1:      Ah ! Does she wear glasses ?  
 Person2:  Yes , I think so .  
 Person1:      That's probably Anne Wallis .  
 Person2:  Yes that's right . Do you know her ? Is she your teacher too ?  
 Person1:      No . But she taught me last term . How long have you been here ?  
 Person2:  Only a week .  
 Person1:      Wow , not long . Where do you live ? With a family ?  
 Person2:  Well , I'm staying at the YMCA at the moment . I'm looking for somewhere more permanent . Do you know of any good places ?  
 Person1:      Yes . Actually my friend has a spare room in here apartment and she's looking for a flatmate . Would you like her phone number ?  
 Person2:  That would be great ! Thanks for your help . Can I buy you coffee ? 

1