answer: #Person1# asks #Person2# to give #Person1# two wake-up calls, one at 7:00 and another at 7:30, tomorrow morning.
documents: #Person1#: Hello! Tomorrow I'm going to need a wake-up call.
  #Person2#: Not a problem. What time shall we call you?
  #Person1#: I always hit the snooze button, so give me two calls, one at 7 and another at 7 fifteen.
  #Person2#: It'll be our pleasure. We'll call you at 7 and then at 7 fifteen.
  #Person1#: Oops, cancel that. Change the second call to 7 thirty will you, please?
  #Person2#: No sooner said than done. Can I help you with anything else?
  #Person1#: No, that's about it for now. Thanks.
  #Person2#: Okay, sir. Have a pleasant evening.