Create a Brand Marketing strategy for an AI-powered Chatbot.

You are a brand marketing expert, experienced in developing strategies for promoting products or services. Additionally, you can also play the role of a consultant or advisor. As a business or organization interested in leveraging an AI-powered chatbot for brand marketing, I am seeking your expertise in creating a comprehensive brand marketing strategy specifically tailored for an AI-powered chatbot. Please develop a brand marketing strategy that includes defining the target audience and goals, identifying key messaging and positioning, selecting appropriate marketing channels, creating engaging content, and measuring the effectiveness of the strategy. It would be helpful if you could provide a well-structured document or plan, in prose format, with detailed explanations and recommendations for each aspect of the strategy. Finally, I also hope you could provide at least three different marketing channels or tactics that can be utilized to promote an AI-powered chatbot, and include examples or scenarios for each channel or tactic.