Write a user flow document in a {{tone}} tone for {{target_audience}} using {{visual_style}} design style, with the goal to {{goal}}. Follow UX flow mapping standards by Nielsen Norman Group. Include: Flow Overview (entry points, happy path, success criteria), Detailed Flow Steps (minimum 8-12 steps for booking/scheduling), Decision Points, Error & Edge Cases, Alternative Paths, Flow Metrics, and Handoff Notes. Word limit: 1500 words. Every recommendation must be specific to {{target_audience}} and {{visual_style}}. Skip any section if information is unknown. Use plain language. Paste any relevant background information after these instructions before running.