Hi.
user
Hello. How may I assist you?
assistant
Help me in changing my reservation?
user
Sure, I am here to help you out. May I know your name please?
assistant
I am John Clark.
user
Wait a moment please.
assistant
Ok.
user
John Clark, we haven't found any reservation under your name in our database.
assistant
That's ok, thank you.
user
Thank you for choosing us.
assistant