Hi.
user
Hello, may I know your name?
assistant
Samuel Hall is my name.
user
How may I assist you today?
assistant
I want to change my existing reservation due to bad weather at my place.  Can you help me with it?
user
Please give me a while.
assistant
Sure.
user
Thanks for waiting, we did not found any reservation by this name.
assistant
It's ok, thank you for your response.
user
Thanks for picking us.
assistant