If your team lives in Outlook, the agent can read availability from the same calendar your colleagues use and create the booking once a caller agrees. Meetings show up in the usual place, with the caller's name and reason in the details. The agent can also send the confirmation by SMS, so the caller has the time in writing.
Many offices use shared calendars or resource calendars for rooms and equipment. Tell us which ones matter, and which people should never be booked without approval. We map those into the booking rules. If your diary is managed by an assistant who adds events manually, we agree how the agent and the assistant avoid stepping on each other. Where a booking needs a person to check it, the agent hands over with a clear note.
Before any real caller is connected, we run test calls against a copy of your set-up. We book, move and cancel a few meetings, then check them in Outlook on a phone and a computer. If time zones matter to your clients, we test those too. You see the results first, then decide when the agent is ready to take live calls.
Do not forget colleagues who book meetings by hand. If everyone uses the same naming and lengths, the agent's bookings look like the rest and nobody has to guess what an entry means. A short note in the invite explaining who booked it, and why, saves confusion later.