[R] Building a bot with Keras to answer questions based on a database

What kind of questions are you looking to answer? Are you trying to information retrieval to retrieve documents from a database or actually querying and reading fields from a database? Based on your example, it looks like you're trying to do the latter. The easiest way to do this would be to train a classification model to learn different intents for questions that a user would ask the bot. E.g. "I want to know how much I earned last week" - MONEY_QUERY_INTENT and then performing DB lookups from the intent detected.