answer: #Person1# asks #Person2# about the concept of e-commerce, the kinds of channels #Person2# uses, and its benefits.
documents: #Person1#: Hello, Fred. What are you doing?
  #Person2#: I'm doing the business online.
  #Person1#: Can you tell me the concept of e-commerce? Now, many people mentioned the word, ' e-commerce ', in front of me.
  #Person2#: E-commerce, or Electronic Commerce is the practice of purchasing and selling products or services over the Internet.
  #Person1#: What kinds of channels can you use in e-commerce?
  #Person2#: We can complete a trade by email, electronic data interchange and smart cards, and so on.
  #Person1#: What are the benefits of e-commerce?
  #Person2#: Firstly, it can overcome the geographic limitation. And secondly, e-commerce can lower the internal costs. And thirdly, people like us, can also open stores on Internet.
  #Person1#: How things have changed now!