Hello.
user
Hello, how can I help you?
assistant
I want to change my existing reservation, can you please help me with this?
user
Sure, may I know your name please?
assistant
I am Katherine Lee.
user
Ok, please wait for a while.
assistant
Sure.
user
Sorry, there was no reservation found with your given name.
assistant
Ok, no problem. Thank you for your information.
user
Thank you for opting us.
assistant