Build a voice AI booking assistant using VAPI and Google Calendar. The demo creates Nate, a car detailing scheduler that checks availability and confirms appointments in real time during a test call.
Here's how to build your first voice agent with VAPI and N8N. I'm going to go ahead and click on Create New Assistant, and we're going to do blank, and I'm just going to call this one a booking agent. We'll go ahead and create that assistant. Basically what I want this agent to do is, let's say I'm running a car detailing company called Hercules Detailing. We're going to system prompt this thing so that someone could call the phone number on herculesdetailing.com and book in an appointment. So this voice agent needs to be able to look at the calendar and it needs to be able to also create events. So back in our VAPI dashboard, we're gonna go over here on the left and click on tools and we need to create those two tools. And I can go down here to Google Calendar and you can see there are two ones that are available, create event and check availability. So I'm actually gonna use ChatGPT to help me with this prompt. Please help me create a system prompt for a voice AI agent. Its name is Nate and it is a booking assistant for a car detailing company called Hercules Detailing. So you can see we have an overview, we have a purpose, We have the service options. And the one thing I just wanna make sure we have here is when to use each tool. So you can see it kind of talks about that right here. For now, let's just copy this code into VAPI and test it out.
Hey, this is Nate from Hercules Detailing. How can I help you today?
Hey Nate, I'm looking to schedule a full interior and exterior detailing today.
Thanks for reaching out. Let me check availability for the rest of today so you can choose a time that works best for you. Hang tight. It looks like we have availability for today at the following times. 4 PM until 6 PM. Which time works best for you?
Let's do the 5 PM slot.
Got it. Let's book you for full interior and exterior detailing at 5 PM today. Could you please provide me with your email address so I can send you a confirmation? You're all set. I've booked your full interior and exterior detailing for today at 5 PM. A confirmation email has been sent to nate@example.com. Thanks for choosing Hercules Detailing. If you want to watch the full breakdown, then click on that play button right here, and I'll see you guys over there.
