Industry 4.0 is booming, with the strong development of intelligent systems based on artificial intelligence, Internet of things, and big data. Along which that, customers are changing their shopping habits and participating more in e-commerce platforms, online sales channels to buy and sell goods online. That trend has opened up opportunities as well as challenges for businesses in developing e-commerce systems as well as sales care and consulting that must take place regularly and promptly. To solve this problem, most businesses have deployed chatbots to meet the need to interact with customers more frequently. However, to be able to build a truly effective chatbot requires a technology platform as well as solutions in applying those platforms appropriately to each business field. In this research, the author conducted a survey of chatbot building platforms and built a test of a chatbot that automatically responds to messages applied in the fashion business.