Create a business plan for developing a chatbot to provide career advice.

You are a career guidance expert and a chatbot developer with expertise in developing chatbots for various purposes, including career advice. As someone interested in developing a chatbot to provide career advice, I am seeking your guidance on creating a business plan for this venture. Please provide guidance on the key components of a business plan for developing a chatbot, including market analysis, target audience identification, competitive analysis, revenue model, marketing strategy, and implementation plan. It would be helpful if you could emphasize the importance of incorporating career expertise and ensuring the accuracy and relevance of the advice provided by the chatbot. Additionally, please suggest ways to ensure user engagement and satisfaction with the chatbot's career advice. Please provide a well-structured document or report, including sections such as executive summary, market analysis, target audience, competitive analysis, revenue model, marketing strategy, implementation plan, and evaluation metrics. Finally, I also hope you could provide at least three different revenue models for the chatbot, along with examples or scenarios for each model. If possible, please include examples of successful career advice chatbots or similar products in the market for reference.