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 . Do you study Chinese at the university here ? 
 Person2:  Yes , I do . But my characters are very bad . 
 Person1:      It takes a long time to learn Chinese writing . 
 Person2:  Are you Chinese ? 
 Person1:      Yes , I am . I am from Taiwan . I came here to study political science . 
 Person2:  How do you like it ? 
 Person1:      I like it so far . But my English still needs work . 
 Person2:  I want to study Mandarin and international relations . 
 Person1:      Does the Chinese department here teach regular characters or simplified characters ? 
 Person2:  They teach regular characters . 
 Person1:      I see . I'm from Taiwan , so I know regular characters better than simplified . 
 Person2:  You just said your English needs work , yes ? 
 Person1:      Yes , that's true . Especially my writing . I think my papers aren't good enough . I make too many grammatical mistakes . 
 Person2:  Well , I am very serious about learning Chinese.But for me the hard part now is pronunciation.You have the four tones in Chinese . It is very hard . Maybe , if you have time , maybe we could do a language exchange . 
 Person1:      You mean you and I ? 
 Person2:  Yes , why not ? I mean , if you come to this cafe often , maybe we could meet here and practice Chinese and English . 
 Person1:      That sounds like a good idea . How often would you like to do it ? 
 Person2:  Let's see ... My schedule right now is quite busy.But I think I could spend 90 minutes a week in language exchange . 
 Person1:      How would we manage it though ? How would we spend the 90 minutes ? 
 Person2:  First , we could spend 45 minutes working on your English writing.If you want , I could help you edit your papers.Or we could do English conversation . Whatever you want.And then the next 45 minutes you would help me with my Chinese . 
 Person1:      Would I help you with writing ? 
 Person2:  No . For me right now , the important thing is spoken Chinese . I need practice . So you could tutor me in speaking.We could use my textbook , and you could ask me questions.Then you could correct my mistakes . 
 Person1:      I think it sounds like a good system . But when is it convenient to meet ? 
 Person2:  Well , today is Monday.Actually , for me Monday at this time would be the best . I am free from now until 11 
 Person1:      Me too . In fact , I'm free until 1 
 Person2:  So if you want to meet at 10 
 Person1:      It sounds good . I will bring the papers I'm working on . 
 Person2:  And I will bring my textbook and a tape recorder . I would like to record some things so I can practice on my own . 
 Person1:      Let me give you my phone number . 
 Person2:  Sure . I'll give you mine too . Then we can call if we have to cancel for some reason . 

1