answer: #Person2# helps Michael to cancel his reservation on flight MS701.
documents: #Person1#: I'd like to cancel my reservation on flight MS701 to Warsaw on the 23rd. My name is Michael.
  #Person2#: Hold on for a moment. ( a few minutes later ) I have cancelled your reservation. Shall I make another one for you?
  #Person1#: No, thanks.
  #Person2#: I see. Please call us again for any further reservation. Thanks for calling us.