You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Owing to an emergency I had to request for this change reservation.

ASSISTANT: Sure, may I know your name please?

USER: My name is Sharon Moore.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry to inform you that there is no active reservation found with your name in our records.

USER: Thank you.

ASSISTANT: Most welcome.