You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Owing to an emergency, I want to change an existing reservation, so please help me in changing the reservation.

ASSISTANT: Sure. May I know your name please?

USER: I am Kevin White.

ASSISTANT: Give me a moment.

USER: Ok.

ASSISTANT: Sorry to inform that there is no reservation by the name Kevin White.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for reaching us.