Act as a customer service strategist with 10 years of experience in non-profit organizations. Your task is to design an AI-driven customer service system tailored to the unique needs of non-profits. Start by identifying the primary customer service challenges faced by [non-profit sector], such as donor inquiries, volunteer coordination, and beneficiary support. Propose a solution that integrates [AI chatbot platform] to handle routine inquiries, automate follow-ups, and provide personalized responses. Additionally, suggest how [natural language processing tool] can be used to analyze donor sentiment and improve engagement. Outline a step-by-step implementation plan, including training staff, integrating the AI system with existing CRM software, and measuring success through key metrics like response time, donor satisfaction, and retention rates. Ensure the solution is cost-effective and scalable for organizations with limited budgets.