Hi. I am James Hall.
user
Hello, how may I assist you today?
assistant
Can you help me for changing my existing reservation?
user
Sure, I am here to help you.
assistant
Thank you.
user
Please wait for a mean while.
assistant
OK.
user
Sorry Hall, there is no reservation found as per your name to change your reservation.
assistant
Oh! It's ok no problem, thank you for your services.
user
You are welcome.
assistant