I just did the same thing with "very famous rock live acts performing within 500 miles of my location within the next 9 months". Whether this kind of functionality needs to be delivered via the browser I'm not sure. The LLM has to be server hosted, so may we well host the rest of it server-side, perhaps?
Chat conversations are definitely not the peak LLM UI. They're universal and don't require app integration, which is why they're what people are currently primarily using, but I strongly suspect that that's temporary.
To find such a thing I basically have to open loads of product pages cross-reference retailers' websites with manufacturers' product pages.
If I could automate that process, it'd be pretty neat.