Hello.
user
Hello, may I know your good name please?
assistant
I am barbara Young.
user
Ok, how can I assist you?
assistant
I want to change an existing reservation due to my  trip got postponed.
user
Please wait for a while.
assistant
OK.
user
Thanks for your time. There is no reservation found with your name.
assistant
Thank you for your response.
user
Thank you and have a good day.
assistant