Air India — refund of domestic ticket cancellation due to covid 19

Address:

506004

As we know covid 19 is on the peak in india all the services have been shutdown. Indian railways are providing 100% refund on ticket cancellation upto 21 june,
So i want to know that does air india provide full refund on domestic ticket cancellation and upto which deadline?
This is not the request but you have to gave full refund of the cancellation or either we have to complatint with the government.