You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you now?

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 Clark.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Thanks for waiting, no reservation was found on the name of Sharon Clark.

USER: Thanks.

ASSISTANT: Thank you for choosing us.