answer: #Person1# asks #Person2# the time and the date because #Person1# is new in Beijing. #Person2# gives #Person1# #Person2#'s business card so that #Person1# can contact #Person2# when needs help.
documents: #Person1#: Excuse me, Sir, May I have the time, please?
  #Person2#: Beg your pardon?
  #Person1#: Er. . . I'd like to know what time it is now.
  #Person2#: Oh, Let me see. . . It's three forty-five. Er. . . wait, My watch is five minutes fast. So it should be three forty
  #Person1#: Thank you. By the way, what day is today?
  #Person2#: Today is Friday. Are you new in Beijing?
  #Person1#: Yes, I've just come from the States, yesterday in fact. I'm still a bit confused about the time.
  #Person2#: Welcome to Beijing. This is my business card. I'm an engineer. If you need any help in Beijing, just give me a call.
  #Person1#: Oh, that's very nice of you. I don't want to sound pushy, but I still l have one more question.
  #Person2#: Go ahead.
  #Person1#: What's the date today?
  #Person2#: It's October the 1st, our National Day. I'd like to talk some more, but I've got to get going now. It was nice talking to you, though.
  #Person1#: Yeah, it was nice to meet you. Hope I run into you again sometime.