You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello.

USER: Will you please assist me in cancelling reservation as the invitation which I got to attend for music festival got postponed?

ASSISTANT: Sure, We are here to help you.

USER: Thank you.

ASSISTANT: May I know your name?

USER: Reservation is done with my name John Lewis.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Thanks for waiting.

USER: Ok.

ASSISTANT: There is no reservation found on your name.

USER: Ok, I think I made reservation with other airline. Thank you for your effort.

ASSISTANT: Ok. Thank you.