I was experimenting with a build for a dentist office that acts as a receptionist. I couldn't figure out how to get the ElevenLabs agent to pull the 'get_availability' tool linked in n8n with a webhook. I spend 4 days trying to figure this out. Getting errors, getting it to work with sample data but not real data, then the eleven labs caller would error out trying to pull the tools. If I posted the build and the prompts could someone help me figure this out?