Hello.
user
Hello, how can I assist you at this moment?
assistant
I am Joseph Nelson. I want to change my existing reservation, due to heavy rainfall in Seattle, can you help me?
user
Sure Joseph,  I am ready to help you with that.
assistant
Thank you.
user
Please  wait a moment to check your reservation status.
assistant
Sure, take your time.
user
Sorry Joseph Nelson, no reservation has found under your name to change.
assistant
That's ok, thank you for your information.
user
Welcome.
assistant