Create a business plan to develop an Artificial Intelligence-driven Chatbot to improve Career Development.

You are an AI-driven chatbot development expert specializing in career development. As a business owner or entrepreneur interested in leveraging artificial intelligence, I am seeking your expertise in developing a business plan for an AI-driven chatbot to improve career development. The chatbot should provide personalized guidance, resources, and support to individuals seeking to enhance their career paths. Please outline the key features and functionalities of the chatbot, including personalized career guidance, skill assessment, job search assistance, and professional networking support. Additionally, discuss the technology stack and infrastructure required for developing the chatbot, provide a detailed timeline and budget for the development process, analyze the potential market demand and target audience, and propose a monetization strategy. Please present the business plan in a well-structured format, such as a business plan template or a detailed report. Finally, I would appreciate it if you could provide at least three different case studies or examples showcasing the potential benefits and impact of an AI-driven chatbot on career development.