answer: #Person2# serves #Person1# to send a parcel by air so that it'll get to Spain for New Year's Day.
documents: #Person1#: I'd like to send this parcel to Spain, please.
  #Person2#: Do you want to send it by airmail or by surface mail?
  #Person1#: Well, how long will it take if I send it by surface mail?
  #Person2#: About five weeks.
  #Person1#: Oh, dear. It won't get there for New Year's Day if I send it by surface mail. How much will it cost if I send it by air?
  #Person2#: Just a moment. I'll weigh it.