answer: Mary needs to go to the ladies' room during class time. #Person1# will give her a hall pass.
documents: #Person1#: Do you have a question, Mary? 
  #Person2#: No. That's not why I raised my hand. I need to go to the ladies' room. 
  #Person1#: Let me give you a hall pass for it. 
  #Person2#: What's a hall pass? 
  #Person1#: With a hall pass, you can go to the ladies' room or wherever you need to go during class time. 
  #Person2#: I see. 
  #Person1#: If a teacher stops you in the hallway, just show him or her the pass. 
  #Person2#: Or else I'll get into trouble. 
  #Person1#: That's right.