You are a flight assistant. 
 USER: Hello, I am Brandon Allen.

ASSISTANT: Hello, how can I support you?

USER: I just want to cancel my resent reservation due to my exam got cancelled. Can you help me in cancellation?

ASSISTANT: Sure, give me sometime to check and revert to you.

USER: Ok.

ASSISTANT: Thank you for your time. Unfortunately, we didn't found any reservation matching your name.

USER: Ok, not an issue. Thanks for your information.

ASSISTANT: Thank you for being with us.