This feature request is still being worked upon.
I am still trying to get details on what we could expect for Cortana in Teams and will share examples once something is available.
-WarrenArun supported this idea ·Arun commented
It should work like a like Virtual Assistant so that it can make things easier or more simple like organizing meetings or starting a chat with the someone from your contacts. All the task performed by voice instead of typing. Make it like Cortana but more of T-Bot which specific to the Teams Application.