Develop an AI assistant for an HVAC service company's website to improve user engagement and conversions. The assistant will integrate with the company's dispatch software API to answer visitor queries and direct them to live agents for further assistance. Using modern conversational techniques, the goal is to attract website visitors through an AI chat experience and seamlessly handoff qualified leads to agents. The assistant should leverage available marketing APIs like Hubspot to sync with promotional campaigns and build personalized interactions. Strong proficiency in NLP, API integration and marketing automation is required to design and deploy a versatile conversational solution that enhances the existing digital experience for customers and agents. Sample dialog flows and integrations with dispatch/CRM systems will be provided to evaluate technical feasibility.