answer: #Person1# invites #Person2# to #Person1#'s birthday party and tells #Person2# the reasons for choosing Monday to celebrate.
documents: #Person1#: Are you doing anything on Monday?
  #Person2#: Nothing special. Why? What's on Monday?
  #Person1#: I thought I'd have a party.
  #Person2#: Nice. What time?
  #Person1#: Evening. Nine o'clock. That sort of time.
  #Person2#: What's the celebration?
  #Person1#: Well, it's my birthday on Saturday, but I'll be away the whole weekend.
  #Person2#: Friday's a nice day to have a party, isn't it?
  #Person1#: Well, I was going to have it on Friday, but Friday has rather good TV programs.
  #Person2#: I know what you mean.