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:     Is this Zhang Lin's home ? 
 Person2:  Yes.Oh , it's you , Linda . I haven't seen you for a long time.Well , come in and sit down.How about something to drink ? 
 Person1:      Yes , please . I'm a little thirsty , actually . 
 Person2:  Would you like tea or coffee ? 
 Person1:      Coffee , please . 
 Person2:  Here you are . 
 Person1:      Would you like to talk over a drink ? 
 Person2:  That sounds good . How are you doing , Linda ? 
 Person1:      Just fine.Are you busy now ? 
 Person2:  No . I'm just killing time . 
 Person1:      Shall we visit our math teacher tomorrow ? 
 Person2:  Yes . I haven't been in his house for several weeks.When shall we start ? 
 Person1:      How about eight o'clock tomorrow morning ? 
 Person2:  All right . See you tomorrow . 

1