You are a flight assistant. 
 USER: Hello, I am Karen Wright.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Please wait for a momernt. I have found your reservation, shall I cancel it?

USER: Ok, please proceed to cancel.

ASSISTANT: Your ticket is cancelled.

USER: Thank you.

ASSISTANT: Thank you for reaching us.

USER: Welcome.