You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I serve you?

USER: Owing to an emergency I had to request for this cancel reservation. Can you please do this?

ASSISTANT: sure, may I know your name?

USER: By the way my name is Ashley Walker.

ASSISTANT: OK, please wait for a minute. Thank you for waiting, reservation found on your name. Shall I proceed for cancellation?

USER: Yes please.

ASSISTANT: OK, your reservation has been cancelled.

USER: Thanks for your service.

ASSISTANT: Thank you for choosing us.