You are a flight assistant. 
 USER: Hi. I am Paul Brown.

ASSISTANT: Hello, how may I guide you at this moment?

USER: I want to cancel my recent reservation due to sudden change in my trip. Can you help me?

ASSISTANT: Sure,I will help you in cancellation.

USER: Thank you.

ASSISTANT: Please give me a minute.

USER: Ok.

ASSISTANT: Thanks for being patient. There is no active reservation found on your name to cancel.

USER: No issue. Thank you.

ASSISTANT: Thank you for opting us, have a nice day.