Flight Booking Chatbot

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  Flight booking chatbot interface

Inspiration

Booking flights online often feels cluttered and time-consuming, too many tabs, filters, and confusing layouts. We wanted to simplify this by creating an intuitive chatbot that helps users find and book flights through natural conversation.

What it does

The Flight Booking Chatbot allows users to search, compare, and book flights using a simple chat interface. It understands preferences like departure location, arrival location, departure date, arrival date, number of passengers and instantly displays curated flight options, all within one seamless conversation.

How we built it

We built the chatbot using LangChain and Gradio for the conversational UI, integrated with real-time flight APIs for data retrieval from SerpAPI. The backend runs on FastAPI, ensuring lightweight performance and quick response times.

Challenges we ran into

Handling dynamic user preferences mid-conversation and ensuring consistent context management across multiple intents was tricky. We also had to optimize API calls to reduce latency and avoid being flagged as bot traffic by booking platforms.

Accomplishments that we're proud of

We achieved smooth, human-like conversation flow and dynamic theme adaptation based on browser mode. The chatbot can re-fetch fresh flight data and automatically relaunch results, improving user experience significantly. It also accepts voice inputs

What we learned

We learned how to effectively blend conversational AI with real-time APIs, manage user context efficiently, and build scalable, production-ready chat experiences using LangChain.

What's next for Flight Booking Chatbot

Next, we plan to add personalized travel recommendations, support for hotels and packages, and a multi-language interface to make the chatbot more globally accessible and versatile.

Built With

• assymblyai
• fastapi
• gradio
• langchain
• langgraph
• serpapi