air india - refund

Dear Sir,
In continuation to trailing e mails, it is submitted that I had booking of following connecting flights of air India as per my official commitments-
*. From Vishakhapatnam to Mumbai by AI date of journey- **.*.** dept **** hrs
*. From Mumbai to Bengaluru by AI date of journey *.*.** dept **** hrs
Now, as intimated by Air India through e mail that flight from Vishakhapatnam to Mumbai by AI date of journey- **.*.** dept **** hrs is revised to flight AI *** date of journey **.*.** dept time **** hrs due to operational reasons.
But due to official commitment, I will not be able to board air India flight schedule dept at **** hrs. Therefore as per above revised timing. I will not able to board second flight from Mumbai to Bengaluru. I would request you kindly cancel both above reservations as it is inconvenient to me to board the schedule flight. The amount incurred in booking may be refunded to me at earliest. Regards