AI-Powered Event Discovery & Booking App Built with OpenAI, LangChain & Flutter

Client
Fishook
Industry
Events & Exhibitions
Challenges
Needed a personalized, intelligent event discovery experience with real-time user interaction, dynamic recommendations, and detailed analytics — all powered by AI.
Solution
Built a cross-platform AI-powered event app using Flutter, a domain-specific LLM, LangChain with RAG, Streamlit dashboard for analytics, and OpenAI-powered conversational assistant.
Impact
50% boost in event bookings, 35% increase in session duration, and 40% admin time saved through automation and insights.
Technologies Used
- OpenAI (GPT-4)
- Custom Domain-Specific LLM
- LangChain + RAG + Pinecone
- Flutter
- Streamlit
- Python + FastAPI
Project Overview
Zestminds collaborated with Fishook to redesign and rebuild their mobile platform into an AI-powered experience. The objective was to enable real-time, contextual interaction through a chatbot, recommend events intelligently, and provide insights to the admin team via a custom dashboard.
Challenges
- Static filters limited user engagement and discovery.
- No mechanism for real-time user queries or chat.
- Admins lacked access to behavioral and interaction data.
The goal was to build an intuitive, intelligent event platform with seamless UX, real-time AI interactions, and deep analytics — all while ensuring scalability.

Our AI-Powered Solution
1. Domain-Specific LLM
We trained a custom LLM specific to the events domain, enabling high-quality responses tuned to exhibition topics, user preferences, and industry trends.
2. GPT-4 Prompt Engineering
Prompt templates were designed to handle complex queries, event suggestions, FAQs, and booking assistance, aligning brand tone with AI-generated content.
3. LangChain & RAG for Real-Time Retrieval
We used LangChain with Pinecone to implement Retrieval-Augmented Generation (RAG), allowing the AI assistant to pull real-time information from the events database and answer with up-to-date accuracy.
4. Streamlit-Based Admin Dashboard
Built a responsive internal dashboard using Streamlit, giving Fishook the ability to track queries, monitor popular events, and optimize chatbot prompts based on user behavior.
5. Flutter Mobile App
The entire application was rebuilt using Flutter for high performance across iOS and Android. AI features like chat and search-by-conversation were seamlessly integrated into the mobile interface.
6. FastAPI-Powered Backend
All microservices and API endpoints were built using Python and FastAPI to ensure fast, scalable, and secure interactions between the frontend, AI engines, and databases.
Technologies Used
- OpenAI GPT-4: Conversational intelligence and content generation
- Custom LLM: Tailored to events domain
- LangChain + Pinecone: Retrieval-Augmented Generation pipeline
- Flutter: Unified mobile codebase
- Streamlit: Real-time analytics and admin dashboard
- Python + FastAPI: Scalable API backend architecture
Results & Impact
- 35% increase in average session time post-AI integration
- 50% rise in event bookings from contextual suggestions
- 40% less time spent on manual analysis due to Streamlit dashboard
- 25% higher rating on app stores due to improved UX
Client Testimonial
“Zestminds helped us transform our platform from a static event listing to a truly interactive, AI-powered experience. The custom chatbot, real-time retrieval, and dashboard insights gave us a significant competitive edge.”
- Product Owner, Fishook
Why AI for Event Platforms?
- Deliver contextual answers and guidance instantly
- Drive higher engagement through intelligent suggestions
- Automate booking and customer support
- Gain real-time insights to optimize event promotion
The Fishook project illustrates the power of combining LLM intelligence, real-time RAG pipelines, and cross-platform design to deliver a best-in-class digital experience for event-goers and organizers alike.
Partner With Zestminds
Want to build an AI-first platform? Whether you're launching a mobile app, integrating chatbots, or building with LangChain and OpenAI — Zestminds can help bring your vision to life.
Explore our work, book a consultation, or start your project today.
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