answer: #Person2# cancels a check with the help of #Person1#.
documents: #Person1#: How's it going?
  #Person2#: Great. Thank you.
  #Person1#: What can I help you with?
  #Person2#: I need to cancel a check.
  #Person1#: What's wrong with the check?
  #Person2#: I accidentally wrote the check for too much.
  #Person1#: How much did you write the check for?
  #Person2#: The check was written for $ 150.
  #Person1#: How much were you supposed to write it for?
  #Person2#: I needed to write it for $ 100.
  #Person1#: I can cancel it for you right now.
  #Person2#: Thank you so much.