Air India — Non availability seat certificate

I am Abhishek serving in armed forces.

Dear Sir/Madam
1. I have tried to book Air india ticket from airindia website from Jaipur Dibrugarh for journey on 14 December 2020.But there was no airindia flight from these above mentioned dates and sectors.I have attached screenshot of the same for your reference.

2.Hence, for Leave travel Reimbursement I am requiring non availability certificate from airindia for the same.
3.You are requested to provided me a certificate on my mail [protected]@gmail.com So that I will submit to my account for my leave travel reimbursement please
Thanking you
With warm regards
Abhishek
Plz rply as soon as possible.