Hello.
user
Hello, how may I aid you at present?
assistant
I am Betty Brown. I want to change my existing reservation. Could you help me?
user
Sure, we are here to help you to change it. Please wait for a while.
assistant
Ok.
user
Thanks for waiting, there was no reservation found on your name.
assistant
That's ok, no problem. Thank you for helping me.
user
Thank you for reaching our service.
assistant