answer: #Person2# helps #Person1# to send the package to #Person1#'s uncle in Sydney by express overseas delivery.
documents: #Person1#: I'd like to send this package to my uncle in Sydney. How much will it cost to send it there?
  #Person2#: Well, if you ship it by standard delivery, it takes 6 days, and it will cost $12.
  #Person1#: Well, is there another way? My uncle's birthday is just in 5 days. I'd like him to receive it by then. The cost doesn't matter.
  #Person2#: We have an express overseas delivery. It costs twice more than the standard. But we guarantee delivery in 2 days.
  #Person1#: OK, then ship it by express overseas delivery.