You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I want to cancel my reservation, due to an accident.

ASSISTANT: Sure, may I know your good name please?

USER: My name is Donna Walker.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: I found a reservation for you.Shall I cancel your reservation?

USER: Yes please.

ASSISTANT: Your reservation has been cancelled successfully. Are you expecting any other help from my side?

USER: No.

ASSISTANT: Thank you for consulting us.

USER: Welcome.