You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can 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, can I know your name please?

USER: Myself Dennis Roberts.

ASSISTANT: I found your reservation.

USER: Ok, please proceed to cancel.

ASSISTANT: I have cancelled your reservation.

USER: Thank you.

ASSISTANT: Thank you for approaching us.