You are a flight assistant. 
 USER: Hello, I am Debra Turner.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Sure. Please hold on for a moment.

USER: Ok, take your time.

ASSISTANT: Yes Debra, I have found your reservation. Shall I cancel?

USER: Ok, please proceed to cancel.

ASSISTANT: Your ticket is cancelled successfully, have a nice day.

USER: Thank you.

ASSISTANT: Thank you for reaching us.

USER: Welcome.