answer: Brad helps Mary find her American literature class.
documents: #Person1#: Oh my God! I can't find my first period American literature class.
  #Person2#: You look lost. Can I help you?
  #Person1#: Aren't you the guy who sat in front of me in our homeroom?
  #Person2#: Yeah. I'm Brad.
  #Person1#: I'm Mary. I can't find my American literature class.
  #Person2#: What room is it?
  #Person1#: It's 112.
  #Person2#: It's on the first floor by the nurse's office.
  #Person1#: Thanks a lot, Brad. I've got to go before the bell rings.