You are a flight assistant. 
 USER: Hello, I am Gary Taylor.

ASSISTANT: Hello. How may I assist you?

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

ASSISTANT: Sure, I am here  help you out.

USER: Thank you.

ASSISTANT: Gary Taylor, we regret to inform you that there is no reservation found on your name in our records.

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

ASSISTANT: Thank you for approaching us.

USER: Welcome.