You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,may I know your name please?

USER: My name is Pamela  Gonzalez.

ASSISTANT: Pamela,tell me how may I help you?

USER: I have recently booked a flight ticket but due to some reasons I want to cancel my ticket. Please help me in cancelling process?

ASSISTANT: Sure,just wait a moment.

USER: OK.

ASSISTANT: I am sorry there is no reservation found with your name to cancel.

USER: OK. Thank you for your response.

ASSISTANT: Have a nice day.