Hello, so I've built a workflow of on N8N and an AI Agent on Retell AI, it's well built but when I tested it – it doesn't book appointments, I've checked everything: the webhooks, APIs, etc. But it just won't create an event on my Google Calendar account. Any tips on how to solve this?

What are the most on-demand AI Agents thse days? I'm curious, other than Voice Agents, what are other types of agents that businesses desperately needs?

Recently, I've been in a hunt for clients but almost none of them responds to me. Any tips on how to get clients fast?

What are the best types of businesses to offer voice agents? I'm currently thinking about offering my service to travel agencies and dental clinics, but I would like some suggestions if you have some.

As a beginner in the AI industry, how much should I charge my first client for both a monthly retainer and a one off project? For context, I'm offering a voice agent that could handle both inbound and outbound leads. For example, the agent can book and check appointments, as well as call leads to confirm or remind them of their appointments.