You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your name please?

USER: I am Roberts Adams.

ASSISTANT: Yes, how may I aid you for today Adams?

USER: I made a reservation to New York to attend a music concert but the concert is cancelled, can you cancel my ticket?

ASSISTANT: Sure, I am here to assist you. Give me a moment to check existing reservation in our listing.

USER: Sure.

ASSISTANT: Sorry, I do not find any reservation under your name to cancel. It might not be confirmed previously.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for opting our service. Hope you have a great day ahead.