Claude Duet broke on Delta's site booking a flight
Igor in New York asked both Grok Bot and Claude Duet to book him a flight to Austin. He says Grok Bot handled the whole thing smoothly, while Claude Duet broke trying to get through Delta's website. Airline sites are some of the hardest for agents to use, with seat maps, add-ons and checks for bots. If your agent gets stuck, ask it to stop, show you the flight it found and let you book it yourself.
The lesson: Airline websites are hard for agents. Let the agent find the flight, and finish the booking yourself if it gets stuck.
Copy this prompt
Find me a flight from [CITY] to [CITY] on [DATE], leaving after [TIME], nonstop if possible, under [PRICE]. Show me the three best options with airline, times, fare type and what a checked bag costs. If you can book it on the airline's site, stop before payment and show me the final price. If the site blocks you or you get stuck, stop, tell me where, and give me the link so I can book it myself.
Our own prompt, written from what the source describes. We haven't run it ourselves. Text in [BRACKETS] is what you replace.
Watch out for
- Check the fare type before you pay. Basic economy often means no changes and no seat choice.
- Some airlines (United since November 11) say they can cancel bookings made by AI agents. Check the airline's rules first.
- Never let an agent retry a payment over and over. Ask it to stop after one failed attempt.
Where this comes from
Original post by @igoryuzo on X, Nov 12, 2026. We rewrote it in our own words. Check the original for the full context.
Read the originalWant to do this yourself?
Our guide compares which agents can do this job, with steps and a prompt.
Can an AI agent book a flight for you?
Some agents can now search flights, fill in the booking and pay once you say yes. Here is which ones, what has gone wrong for real people, and the checks that keep a mistake from costing you a ticket.