I connected the GoHighLevel Check Availability tool to my assistant but it keeps saying there is no available time

Use

ghl_contact_get

with email/phone, create the contact if missing, then call

ghl_check_availability

with the correct calendar ID, ISO times, and timezone also check GoHighLevel's troubleshooting tool and Vapi logs to ensure slots aren't blocked and inputs are valid..

How do I do all these?

Add and connect all four GHL tools to your assistant, write a system prompt to guide the flow step-by-step, ensure correct calendar ID, ISO timestamps, and timezone..