Hi.
user
Hello, how may I assist you?
assistant
My name is Brian Parker. Due to sudden changes in my schedule, I want your help in changing my existing reservation. Can you please help me with that?
user
Sure, please wait for a mean while.
assistant
Ok.
user
Sorry Parker, there is no reservation found as per your name to change your reservation.
assistant
That's ok, thank you for your service.
user
You are welcome and hope you have a great day.
assistant