You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you?

USER: My name is Joshua Campbell. My business meeting was cancelled, so please cancel my reservation.

ASSISTANT: Sure, let me check the availability of your reservation to cancel it.

USER: OK.

ASSISTANT: Thanks for waiting, We found a reservation with your name. Shall I proceed for cancellation?

USER: Yes please.

ASSISTANT: Your reservation has been cancelled.

USER: OK, thank you for your service.

ASSISTANT: Thank you for choosing us, Have a nice day.