AI Chatbot is one of the most popular applications of Artificial Intelligence. As banks have a lot of customer support people, they introduced AI chatbots before other areas. In 2017, Saltlux developed AI chatbot to support customers in two large Korean banks.
This paper shows the technical composition of AI chatbot and explains the development process. It also shows how to collect and reconstruct the data needed for AI from existing data and the necessary technical structure to develop a question/answer system to support user's request. Then we will look at what should be checked when developing smart AI chatbots. We propose a method to develop a chatbot that replaces or supplements the user manual from the bank chatbot case.