Can one AI agent run several workflows, like booking appointments and following up with no-shows?

Yes. One agent can have as many workflows as you want. The same agent that answers calls and books appointments can also follow up with no-shows, run a drip sequence, and send a conversation summary email or a lead capture email. There are no separate builders: everything lives in the agent.

Workflows and the AI work together. For example, a workflow can start from a trigger (manual, form submission, webhook and others) and send an email or SMS as the opening message, and the AI then replies to the person's response as long as that channel (email, SMS and so on) is turned on for the agent.