Hello, Donald Thompson here.
user
Hello, how can I give assistance to you?
assistant
Due to my earlier reservation unknowingly  the wrong dates can be mentioned so, I want to change my recent reservation. Ok, don't change it, please cancel my reservation. Can you please help me with cancellation?
user
Ok, I will help you. Please wait a minute.
assistant
Sure.
user
Your ticket has been cancelled.
assistant
Thank you.
user
We will refund your money soon to your wallet. Thank you.
assistant
Thanks for your information.
user