Hello.
user
Hello, how can I assist you today?
assistant
I want to change my existing reservation due to my travelling dates has been changed. Can you help me out?
user
Sure, may I know your name please?
assistant
My name is Gregory Miller.
user
Sorry to say that, no reservation was found on your name.
assistant
Ok, No issues.
user
Thank you for choosing us.
assistant
Thanks for the information.
user