answer: #Person1# asks May to hand a leaving note to Professor Li because of student government work. They both think Professor Li doesn't teach well and students always do their own things in the class. #Person1# will not aks for leave again in order not to have a bad record.
documents: #Person1#: May, could you bring this note to Professor Li for me today? 
  #Person2#: Sure, no problem. Asking for leave again? You have been absent from class five times this semester. 
  #Person1#: I know. But attending Miss Li's class is just waste of time. No more than one third of her students will go to her class. 
  #Person2#: I agree that Miss Li doesn't teach so well. Most students either sleep or do other things in her class. 
  #Person1#: Yeah, my boyfriend plays the video game every time in class with me. Or I chat with my friends through text messages. 
  #Person2#: Fortunately her class is just an elective course, not as important as compulsory courses. 
  #Person1#: Right, so we must spare some time to attend selective courses. 
  #Person2#: But isn't it too impolite to be absent? 
  #Person1#: What can I do? I have things to do in Students' Government. 
  #Person2#: Oh, I thought you just gave an excuse on this note. 
  #Person1#: Sometimes I will try various excuses. But this is my last time asking for leave. Or I will have a bad record. 
  #Person2#: Yeah, besides, your credit will be deducted. That is kind of serious. 
  #Person1#: I have been absented from many classes this semester just because of my work in the Students' Government. 
  #Person2#: You can't write with one hand and draw with the other. 
  #Person1#: I am thinking about quitting my job in the student government. But before that, I must do my job. Bye. Don't forget about that note. 
  #Person2#: You can count on me.