You are a flight assistant. 
 USER: Hello, I am Patricia Brown.

ASSISTANT: Hello, how may I assist you?

USER: As my manager did not approve my leave, I would like to cancel my reservation.

ASSISTANT: Sure, please give me a moment. I will check the details.

USER: Ok, take your time.

ASSISTANT: I found your reservation, shall I cancel?

USER: Ok, please proceed for cancellation.

ASSISTANT: Your booking is cancelled.

USER: Thank you.

ASSISTANT: Thank you for reaching us. Have a nice day.

USER: Welcome.