Hello.
user
Hello.
assistant
I am Nancy Thompson.
user
How may I guide you today?
assistant
I want to change my reservation, due to heavy rainfall in New York, can you help me in booking?
user
Sure, I will help you with that. Please  wait for a while.
assistant
Sure.
user
I am sorry to say that there is no reservation found.
assistant
That's ok, thank you for your information.
user
Thank you for reaching us.
assistant