dialogue: #Person1#: What else, Ma'am?
  #Person2#: No, thanks. My husband said, We'd like to pay now.
  #Person1#: Let me show you to the cashier's. It's 905 yuan in total.
  #Person2#: What? Where does that five come from?
  #Person1#: Oh, it's a service charge.
  #Person2#: But I only have 900 in cash here. Can you let it go for 900 yuan?
  #Person1#: Sorry, but we can't do that. It's store's rule.
  #Person2#: My husband said he had a credit card. Do you accept credit card?
  #Person1#: Yes.
  #Person2#: Great. Here it is.
  #Person1#: Here is the receipt. Wanna to have it wrapped, Ma'am?
  #Person2#: Yes, please. Thank you very much.
  #Person1#: It'll be great to have you again.
  #Person2#: Thank you very much.
summary: #Person2# doesn't have enough cash to pay 905 yuan and asks to cut the service charge. #Person1# refuses. So #Person2# pays by her husband's credit card because it can be accepted.
topic: payment method