Hello, I am Jeffrey Turner.
user
Hello, how may I serve you?
assistant
I want to change my existing reservation. Could you help me in doing this?
user
Sure, please give me a moment, I will check with the existing reservation and revert you.
assistant
OK, I will be waiting.
user
Sorry to say that , there is no reservation found previously with your name.
assistant
OK, not an issue.
user
Thank you for your patience. Have a good day.
assistant
Thanks for the information.
user