Act as a Customer Experience Specialist with 5+ years in the bike-sharing industry. Your task is to design an AI-driven solution to enhance customer service by addressing [common pain points], such as bike availability, payment issues, and maintenance delays. The solution should leverage [specific AI technologies, e.g., chatbots, predictive analytics] to provide real-time support, personalized recommendations, and proactive problem-solving. Focus on improving [key metrics, e.g., response time, customer satisfaction scores] while ensuring scalability across [target markets, e.g., urban areas, university campuses]. Include a step-by-step plan for implementation, potential challenges, and measurable KPIs to track success.