Hello.
user
Hello, how can I serve you today?
assistant
I need to change my existing reservation. Could you help me with that?
user
Sure, I can help you.
assistant
Thank you.
user
I need to find your reservation to change it. So, please mention your name here?
assistant
John Evans here.
user
Sorry, we did not find any reservation on your name to change.
assistant
That's ok, no problem.
user
Thanks for reaching us, have a good day.
assistant
Thank you.
user