Meaning of availability

Here in India, I am training people in a new office. They are the fares department of an airline company. While they calculate fares, they also receive calls from other departments. The phone system automatically distributes calls to the individuals. In order not to receive calls, you have to tell phone system that you are not available. In Dublin office, we use a term “being on Special”, but here in Delhi office they say “being unavailable”.

One day, a meeting was about to start. I had to tell people to be “unavailable” and come to the meeting room, otherwise phone will keep ringing.

I approach a girl and said “could you please be unavailable?”.

She looked at me and said

“I AM unavailable”.

I had to notice a red mark on her forehead called “Sin-door” that is a symbol of married women.

I said
“Uh….ok, I can see that”