AI Sales-Lead Agent Setup -- 2

I need an end-to-end build of an AI agent focused on sales and lead generation. The goal is for the agent to attract, qualify, and nurture prospects automatically, then pass warm opportunities straight into my pipeline... (Budget: ₹12500 - ₹37500 INR, Jobs: AI Chatbot Development, AI Development, API Integration, Automation, PHP, Python, Salesforce.com, Software Architecture)