answer: #Person2# gives Mr. Johnson a safe box and a larger envelope. He will be fined if losing the safe box key.
documents: #Person1#: Hello, I am Mr. Johnson at room 309. I would like to have a safe box. Do I need to pay for a safe box?
  #Person2#: No, you don't. Just fill out this card and sign your name and room number on it.
  #Person1#: Here you are. Can I have a larger envelope to put my valuable things in it?
  #Person2#: Yes, will this do?
  #Person1#: Yes, it's perfect.
  #Person2#: Wait a minute. This is your safe box key, don't lose it. You'll have to pay two thousand yuan if you lose the key.
  #Person1#: OK, I won't.