answer: #Person1# buys some stamps and postcards from #Person2#. #Person1# wants to send letters to South America. #Person2# tells #Person1# #Person1# can request a rectum receipt and that #Person2# works from 8:30 to 17:30.
documents: #Person1#: Give me a pack of first-class stamps, please.
  #Person2#: Here you are. That will be five dollars. Anything else?
  #Person1#: Yes. I want some post cards and some airmail stamps. I want to send some letters to South America.
  #Person2#: Just a moment, I'll look up the rate for air-mail letters to South America.
  #Person1#: Can you tell me how much it will cost to send a package to Colombia? Also, I what to know how long it will take.
  #Person2#: Do you have the package with you? I would have to weigh it to see how much it would cost.
  #Person1#: Do you insure package?
  #Person2#: Yes. All you have to do declare the value of the package and decide how much you want to insure it for.
  #Person1#: Is there a way that I can be sure that the people in South america receive my package?
  #Person2#: The post office rarely loses package. You can, however, request a rectum receipt.
  #Person1#: One last question-what are your hours?
  #Person2#: We open at eight-thirty in the morning and close at five-thirty in the afternoon.
  #Person1#: Thank you, you helped me a lot.