answer: #Person1# tells #Person2# today's appointment with Mr. Smith is canceled.
documents: #Person1#: I'm calling about you appointment. Mr. Smith has to cancel all his appointments because he's got something urgent to attend to.
  #Person2#: When can I go to see him?
  #Person1#: Anytime except today. Please give him a call before you come.
  #Person2#: OK.