You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am Kevin Walker. I want to change my reservation due to heavy rainfall in New York.

ASSISTANT: Kevin Walker, please give me a moment to check with your reservation.

USER: Ok.

ASSISTANT: Sorry to inform you Kevin Walker, but no reservation was found by your name.

USER: It's ok, thank you for your information.

ASSISTANT: Thank you for choosing our agency.