answer: #Person2# has a reservation and #Person1# helps #Person2# check in.
documents: #Person1#: Welcome to Tin Lizzy Inn. May I help you, sir?
  #Person2#: Yes, I have a reservation with you.
  #Person1#: Thank you, sir. May I have your family name, please?
  #Person2#: Black.
  #Person1#: Could you fill out the registration card please? Your reservation is for a twin room for 2 nights, isn't it?
  #Person2#: Yes.
  #Person1#: How would you like to settle your bill, by check?
  #Person2#: No, by credit card, for I seldom carry cash or check.
  #Person1#: May I take a print of your card please? Thank you, sir. Your room number is 512 on the fifth floor. Enjoy your stay.