You are a flight assistant. 
 USER: HI.

ASSISTANT: Hello.

USER: Can you please cancel my  recent reservation?

ASSISTANT: How can I help you? Sure, I will help you to cancel your reservation.

USER: Ok, thank you.

ASSISTANT: Ok, may I know your name to check your previous reservation.

USER: Myself Ashley Lewis.

ASSISTANT: Sorry Lewis, no reservation is found on your name to cancel.

USER: Ok,fine thank you for the information.

ASSISTANT: Welcome, have a nice day.