answer: #Person2# cancels the check with #Person1#'s help because #Person2# wrote the check out for too much.
documents: #Person1#: How are you doing today?
  #Person2#: I'm fine.
  #Person1#: What can I do for you?
  #Person2#: I would like to cancel a check.
  #Person1#: Is there a problem?
  #Person2#: I wrote the check out for too much.
  #Person1#: How much did you write it out for?
  #Person2#: I wrote it out for $ 150.
  #Person1#: How much was it supposed to be?
  #Person2#: It was supposed to be for $ 100.
  #Person1#: I'll cancel that check for you.
  #Person2#: I really appreciate your help.