Air India — regarding non issuing non availability of seat certificate

Address:

Konda Gaon, Chikalputti, Bastar, Chhattisgarh, 494226

I am dy comdt. Atendra singh from crpf armed forces., i need a non availability of seat certificate 08/08/2019 air india flight from raipur to delhi. My official work is on same day so i booked in private airlines. As i need to claim my tickets my office staff is asking for the certificate from airindia. I checked with airindia offices in raipur airport, they are not responding properly. Now i don't know where to ask and which office i need to contact.
Please provide me via mail i'd [protected]@gmail.com
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