You're looking to automate your Facebook page's responses and interactions with customers. Manychat and Chatfuel are two popular chatbot builders that can help you achieve this goal. Both platforms offer intuitive interfaces, but they cater to different business needs. Manychat is ideal for bigger human-staffed teams, offers more channels for communication, and has a free plan available. However, its pricing structure may become unpredictable as the number of active conversations increases. Chatfuel, on the other hand, excels at handling open-ended questions, provides more templates to get started, and has better AI integration with OpenAI's GPT models. Its pricing structure is more economical, but it doesn't offer a free plan. Ultimately, the choice between Manychat and Chatfuel depends on your specific business needs and preferences.