Ceating a chat bot using an LLM with any Vector database using lanchain library $.$ Technical Test: Create a chatbot that is trained based on local data for example a pdf about a big company or organization that contains a lot of information about the particular company. Extract text and data, convert data into numerical vectors, and store both vectors and document details in a database. The chatbot needs to take user queries$/$input and return responses based on content from these PDF documents. When no relevant results are found in the PDF$,$ it should rely on content from an LLM to frame the response. If there is still no appropriate answer, it should provide a user$-$friendly response. The UI interface should have the look and feel of a chatbot.