Microsoft has introduced a human-assisted artificial intelligence (AI) service called ‘Scheduler’ to aid and reduce the time spent setting up meetings. Using Cortana a user licensed with Microsoft 365 from a basic Exchange Online Plan 1 is able to schedule a meeting with internal and external people with a few words. The people for the meeting receive an email with date options which they respond to and the meeting is booked into diaries, including Teams diaries.
The price for the license seems a bit steep at $10 per user per month but may be a useful option for those that need that extra help with their busy work day. The announcement is here: Scheduler, a new Microsoft 365 service, makes scheduling meetings easier and faster – Microsoft Tech Community
As an alternative there is a free FindTime application. See FindTime – The easiest way to schedule across companies (microsoft.com)