answer: #Person1# mails a package of souvenirs to Zhuhai by air with #Person2#'s assistance.
documents: #Person1#: Which window do I go to for parcel?
  #Person2#: Here will be OK.
  #Person1#: I want to mail this package.
  #Person2#: Please put it on the scale. Where are you mailing it to?
  #Person1#: Zhuhai.
  #Person2#: Do you want to mail it by air or sea?
  #Person1#: What's the difference in price?
  #Person2#: 25 yuan by air, 13 yuan by sea.
  #Person1#: How long will it take by air?
  #Person2#: About 2 days.
  #Person1#: Then I will send it by air, thank you.
  #Person2#: Please fill out this form, and what's in your package?
  #Person1#: Just some souvenirs.
  #Person2#: OK, that will be OK.
  #Person1#: Thank you.