Write that down with the person on your team who handles it. Someone might ask a question on your website, call after hours or request a demo. For each step, decide what information you need, where the enquiry should go and who deals with anything the system cannot finish. You can then compare tools against a process you actually understand.
The details matter here. A website question needs an approved answer and a clear next step, such as a form, callback or booking request. A phone call may need a few questions and a summary for staff. Booking needs an agreed source for availability, appointment types, confirmations and changes. You can connect these jobs, but you can also start with one and test it properly.
Ask to see what happens when the process gets interrupted. The person leaves out a detail. The calendar cannot confirm the appointment. A call needs to go to someone who is unavailable. Can staff see where it stopped, what the person already said and what needs to happen next? Those are useful things to check while you are looking at a demo.
A Booking Agent may be a sensible starting point when your calendar rules are clear. A Voice Agent may come first if the immediate problem is unanswered calls. For a clinic's reception and appointment-request process, look at the AI Receptionist. If enquiries arrive mainly through WhatsApp, look at the WhatsApp Automation route and how it hands conversations to staff.
These are related options to explore. What connects, and what each system can do for your business, needs to be agreed and tested in your own process.
Choose the first part your team can own. Give it a clear next action, decide when a person takes over, and check that both the normal route and the exceptions work. Then use what you learn to decide what to connect next.