answer: Mr. Green wants Anna to help him book a bus ticket to Seattle at 6:30 tomorrow morning and a round-trip ticket back at 5:45 pm.
documents: #Person1#: Anna, come in, please.
  #Person2#: Yes, Mr. Green. What would you like me to do?
  #Person1#: I need a bus ticket to Seattle.
  #Person2#: What time do you want to leave, Mr. Green?
  #Person1#: Well, tomorrow morning, as early as I can. I have an appointment before noon.
  #Person2#: There's a bus every thirty minutes starting at 5:30 a.m.
  #Person1#: In that ease, I'd like to leave then. Wait... My wife's going to drop me off here on her way to work. Could you book me a 6:30 ticket instead?
  #Person2#: Sure. Will it be one way or round-trip?
  #Person1#: Oh, I probably should buy a round-trip ticket now, since I'll be coming back tomorrow evening. Oh, is there a bus around 6?
  #Person2#: Yes, there's one at 5:45. You'd get back before 8 o'clock?
  #Person1#: OK, I'll take that one. I told my wife we'd see a movie at 9:30.