The term “conversational commerce" was first used in an article by Chatbot pioneer Chris Messina- Uber’s former Developer Experience Lead. It applies not only to bots but any use of messaging service for commerce.
The bots’ abilities go hand in hand with its use case. Not all bots need to be based on buzzword technologies such as Machine Learning and Natural Language Processing (NLP). Simple requirements demand simple solutions. If your use case entails providing fixed information in response to fixed answers, there is simply no need for any complex logic behind the bot.