You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Nicole Brown, I want to change my reservation due to sudden weather change at my place. Can you help me?

ASSISTANT: Sure, please wait.

USER: Sure.

ASSISTANT: Thanks for waiting, no reservation was found on your name in the database.

USER: Ok, thank you for informing me.

ASSISTANT: Thank you for opting us.