Hello.
user
Hello. How can I help you?
assistant
I want to change my existing reservation. Can you help me?
user
Sure, I will help you in that one. May I know your name please?
assistant
Sure, I am Edward Rodriguez.
user
When I have checked there is no reservation found for the user name.
assistant
OK, no problem. Thank you for your information.
user
You are welcome.
assistant