You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I reach out to you?

USER: I am Karen Martin. As my interview got postponed, I need to cancel my reservation. Can you please cancel my reservation?

ASSISTANT: Sure, let me check the reservation list and revert you.

USER: Sure.

ASSISTANT: We found a reservation on your name. Shall I proceed to cancel it?

USER: You can cancel.

ASSISTANT: Ok, your reservation has been cancelled and the refund amount will be sent to your back accounts in 2 to 3 working days.

USER: Ok, thank you.

ASSISTANT: Thank you for choosing us.