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 , Miss . 
 Person2:  Yes . May I help you ? 
 Person1:      I'm a graduate student here in mathematics . I've just come from China and I've never used a western library before . I'll be here for five years , so I'd like to learn to use the library as efficiently as possible . I wonder if someone might have time to show me around . 
 Person2:  I'd be very glad to show you around , but I'm very busy right now.Could you come back about 3,30 ? 
 Person1:      Sure . 3:30 this afternoon . 
 Person2:  Good . See you later . 
 Person1:      Thank you . Good-bye . 

0