Hi.
user
Hello, how may I help you?
assistant
Can you help me to change my existing reservation?
user
Sure, may I know your good name please?
assistant
Stephen Allen here.
user
Ok, please wait for a while.
assistant
Sure.
user
Sorry to say that, there was no reservation found with your given name.
assistant
Ok, no problem. Thank you.
user
Ok, thank you for opting us.
assistant