You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: As my manager did not approve my leave, I would like to cancel my recent reservation. Can you aid me with this?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: Myself Elizabeth Collins.

ASSISTANT: Sorry to inform you that there is no active reservation on your given name.

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

ASSISTANT: Thanks for contacting us.

USER: Welcome.