Hi.
user
Hello, how may I help you today?
assistant
As my exam got postponed, I want to change my existing reservation. Can you help me out?
user
Sure, I am here to help you with this. May I know your name please?
assistant
Sure, my name is Sarah Jackson.
user
Please wait for a mean while.
assistant
Ok.
user
Sorry Sarah, there is no reservation found as per your name to change your reservation.
assistant
That's ok, thank you.
user
You are welcome and have a great day.
assistant