According to the Microsoft Learn module "Build a QnA Maker knowledge base", QnA Maker allows developers to create bots that answer user queries based on documents like FAQs or manuals. To make a bot more natural and conversational, Microsoft provides a "chit-chat" feature - a prebuilt, professionally written set of responses to common conversational phrases such as greetings ("Hello"), small talk ("How are you?"), and polite phrases ("Thank you").
Adding chit-chat improves user experience by making the bot sound friendlier and more human-like. It doesn' t alter the main Q&A logic but enhances the bot's tone and responsiveness.
The other options are not correct:
* A. Increase the confidence threshold makes the bot more selective in responses but doesn't add new conversational features.
* B. Enable active learning improves knowledge base accuracy over time through user feedback.
* C. Create multi-turn questions adds conversational flow for related topics but doesn't add greetings or casual dialogue.
Thus, to make the bot more personable, the correct action is to Add chit-chat.
Reference:Microsoft Learn - Add chit-chat to a QnA Maker knowledge base