Depends on how different the flows are for different restaurants. If they're just different names but use the same booking system you'd typically use an input and have Autotab find the correct restaurant first. If they're totally different booking systems you can try the instruct (open ended agentic) step but my guess is that will be too slow and unreliable for now, so you'd probably want to record different skills for each.
Docs are here with sample code: https://docs.autotab.com/api-reference