Hello.
user
Hello. How may I assist you today?
assistant
I am Roberts Wright. I want to change my existing reservation, due to heavy rainfall in New York.
user
Sure, I can help you with that. There is no previous reservation available on your name  Roberts Wright.
assistant
That's ok, thank you for your information.
user
Do you want to know any thing else from us?
assistant
No, thank you for your favour.
user
Thank you for reaching us, have a nice day.
assistant