Excuse me , Miss .
neutral
user
Yes . May I help you ?
neutral
assistant
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 .
neutral
user
I'd be very glad to show you around , but I'm very busy right now.Could you come back about 3,30 ?
neutral
assistant
Sure . 3:30 this afternoon .
neutral
user
Good . See you later .
happiness
assistant