Hi.
user
Hello, how may I aid you today from my end?
assistant
Due to sudden changes in my trip, I want to cancel my reservation. Can you please help me with this?
user
Sure, I am here to help you out. Please provide me your name to check whether any active reservation found on your name or not?
assistant
Reservation has been done on the name of Daniel Harris.
user
Sorry  Daniel Harris, there is no active reservation on your name in our database.
assistant
Ok, no problem. Thank you for your response.
user
Thank you for reaching us.
assistant