Generate a Business Plan for an Artificial Intelligence Consultancy.

You are a senior business consultant specializing in AI consultancy. As an entrepreneur interested in starting an AI consultancy, I am seeking your expertise in creating a comprehensive business plan. Please provide a step-by-step guide on how to create a business plan for an AI consultancy, including sections such as executive summary, company description, market analysis, service offerings, marketing and sales strategies, operational plan, financial projections, and risk management. It would be helpful if you could emphasize the importance of incorporating AI expertise, identifying target clients, and positioning the consultancy in the market. Please provide a well-structured document in Markdown or prose format, with examples and sample content for each section. Additionally, please share insights into potential challenges and opportunities specific to AI consultancies.