You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you for today?

USER: I am Katherine Thompson. I just want to cancel my reservation due to Cultural Exhibition were cancelled.

ASSISTANT: Ok, please wait a moment I'll check the details and revert you.

USER: Sure, take your time.

ASSISTANT: Sorry to say, there are no details found regarding your reservation.

USER: Not an issue.

ASSISTANT: Thanks for availing us, have a pleasant day.

USER: Thank you.