answer: Mike Williams calls #Person1# to explain he received 50 CDs but have ordered 150. #Person1# checks the order and will send the extra 100 to him.
documents: #Person1#: Hello, Benson Software, you're through to customer service.
  #Person2#: Hello, this is Mike Williams from Smiths retailers. I'm phoning about the CD players you sent last week. Emm, I'm afraid you don't seem to have sent us enough.
  #Person1#: Oh, dear, I'm sorry about that. How many did you receive?
  #Person2#: Well, we received 50, but I'm pretty sure we ordered 150.
  #Person1#: Just a moment, I'll check your order. Well, according to our records, you seem to have ordered 50.
  #Person2#: Really? Oh, perhaps there's been a mistake. I feel certain we have ordered 150.
  #Person1#: Sorry about the misunderstanding. We'll get the extra 100 to you as soon as possible.