https://www.plavaga.com/blog Insights on building, securing, and optimizing enterprise AI systems — from the team at Plavaga Software Solutions. en Fri, 03 Apr 2026 00:00:00 GMT https://www.plavaga.com/blog/langchain-agent-production-whatsapp-hotel-booking https://www.plavaga.com/blog/langchain-agent-production-whatsapp-hotel-booking Fri, 03 Apr 2026 00:00:00 GMT A production conversational AI handling hotel bookings over WhatsApp — room availability, pricing, confirmation, and post-booking queries. Where cost surprises, retrieval failures at scale, and PII handling problems first surfaced. Rishi Choudhary