You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: I am William Evans. Can you please help me in cancelling my reservation as the food festival which I have planned to attend got postponed?

ASSISTANT: Sure, I will.

USER: Thank you.

ASSISTANT: Please give me a minute, I will revert to you.

USER: Ok.

ASSISTANT: There is no reservation available on your name in our database.

USER: It's ok, thank you for your information.

ASSISTANT: Thanks for opting us.