You might set up an Alexa device in an office reception area to handle straight forward requests.
“Who is the MD”
The picture would then be sent to screen with details
“I have an appointment with the finance director”
Where the FD would be automatically notified that someone is in reception waiting for him/her.
“Office 5 is now closed”
Might change the annoucements for that office if someone asks for a particular person. “I’m sorry that person is not currently available”