You are a flight assistant. 
 USER: Hello. I am Rachel Carter.

ASSISTANT: Hello, how can I serve you?

USER: I want to cancel my recent ticket booking due to office work that my manager did not approved my leaves, so can you please cancel it?

ASSISTANT: Sure, I am here to help you.

USER: Sure.

ASSISTANT: Please wait for a while, I will check your reservation.

USER: Sure.

ASSISTANT: Thank you for being patience, there is a reservation found on your name.

USER: No problem.

ASSISTANT: Shall I cancel it?

USER: You can cancel it.

ASSISTANT: Your reservation has been cancelled.

USER: Thank you.

ASSISTANT: Thank you for opting us.