I am trying to develop an AI Chatbot using InstructLab. I have installed Ilab CLI and downloaded a model, and I’m in the process of training the model on my local machine by creating a qna.yaml file in the knowledge folder. My goal is to ensure that the bot retrieves responses exclusively from my local knowledge base and does not query external sources. For instance, in the qna.yaml file, if there’s a question like ‘what is the capital of Paris’, I expect the bot to provide the answer from qna.yaml. However, if the question is ‘what is the capital of Canada’, I want the bot to respond with ‘no answer found’, indicating that it didn’t find any relevant information locally. Essentially, I want the bot to rely solely on the local qna.yaml file and not seek answers from external sources. Is it feasible to achieve this?