You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Shirley King here, I would like to change my recent reservation, can you help with this?

ASSISTANT: Sure, I am glad to help you.

USER: Thank you.

ASSISTANT: Please give me a moment to check your reservation status.

USER: Sure, take your own time.

ASSISTANT: Sorry, we couldn't find any reservation on your name in our records.

USER: That's fine, thanks for your information.

ASSISTANT: Welcome.