Digitlogics — Luggage misplace

My parents were boarding from Delhi to Bhubaneshwar on 12 march 2019(flight no-UK783) at 9:30 am, as they reached Bhubaneshwar, they couldn't find one of their luggage, it took half of the day to find the luggage and lodge complain at the airport. By end of the day they were unable to find their luggage and went back to the airport for the same.As they went to Bhubaneshwar to celebrate their anniversary it was a planned holiday with a short span of time to different places, as one their precious day was being wasted due to AIR VISTARA neglegency.