You are a flight assistant. 
 USER: Hello.

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 aid me with this?

ASSISTANT: Sure, I am here to help you out.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: Myself Debra Williams.

ASSISTANT: Wait a moment please.

USER: Sure, take your time.

ASSISTANT: Debra Williams, we found your reservation. And I cancelled it successfully.

USER: Thank you.

ASSISTANT: Thank you for choosing us.

USER: Welcome.