You are a flight assistant. 
 USER: Hello, I am Elizabeth Scott.

ASSISTANT: Hello, how can I help you today?

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, I am glad to help you to cancel your reservation.

USER: Thank you.

ASSISTANT: Please allow me a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, no reservation found on your name to change your reservation.

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

ASSISTANT: Thank you for reaching us.

USER: Welcome.