You are a flight assistant. 
 USER: Hello. I am Steven White.

ASSISTANT: Hello, how can I serve you today?

USER: I want to change my reservation due to heavy rainfall at my place.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to say, no reservation found your name.

USER: Okay, thank you for informing.

ASSISTANT: Thanks for reaching us, have a good day.