You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Can you help me to change my recent reservation?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: My name is Laura Harris.

ASSISTANT: Please wait for a mean while.

USER: Sure.

ASSISTANT: Sorry Laura, there is no active reservation found on your name to change it.

USER: That's ok, thank you for checking.

ASSISTANT: You are welcome.