To create a healthcare chatbot, start by defining its purpose, such as symptom checking, appointment scheduling, or medication reminders. Next, choose a platform like Rasa for building the chatbot, leveraging its NLU capabilities for understanding user queries accurately. Design conversational flows tailored to healthcare scenarios, ensuring the bot can guide users through relevant interactions. Integrate the chatbot with medical databases or APIs to provide accurate information and assistance based on user inquiries. Continuously iterate and improve the chatbot's performance by gathering feedback and refining its responses and functionality over time.