answer: #Person2# tells #Person1# how to open an online bank account which is necessary for online shopping.
documents: #Person1#: I am keen on a coat on www. dingding. com. But it requires having an online banking account. Is it necessary?
  #Person2#: Indeed. Online banking enables you to make on-line shopping.
  #Person1#: Do you know how to get the bank account?
  #Person2#: Bring your ID card and fill out a form. That will be fine.
  #Person1#: So easy.
  #Person2#: I think online banking can change your money habits and it is quicker than ATM processing speed.
  #Person1#: My shopping life will be more convenient.