I built a booking agent for a demo nail salon on Agentplace.
It asks a couple of questions when you're not sure what to book, suggests one service with the price, offers three open times, and shows a summary card before you confirm. It only quotes the prices it was given. If you write in Vietnamese it answers in Vietnamese, since a lot of US nail salons are Vietnamese-owned.
Try it:
https://nsit6vgim8oi.run.agentplace.io (the first load takes about 20 seconds)