You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Laura Parker.

ASSISTANT: How could I serve you the best today?

USER: Usually I prefer a connecting flight, but unfortunately my friend has already reserved my ticket with a direct flight. So, I want to change it. Can you modify my reservation?

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Unfortunately there was no reservation found with your given name in our records.

USER: Ok, thanks for notifying me.

ASSISTANT: Thank you for availing us.