You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Dennis Young.

ASSISTANT: How can I assist you?

USER: I just want to cancel my recent reservation, due to my exams has been cancelled. Can you please aid me with cancellation?

ASSISTANT: Ok, please can you wait a moment I will check for your reservation?

USER: Sure.

ASSISTANT: Mr. Dennis Young, there is no reservation been found on your name to cancel. Sorry for the inconvenience.

USER: That's Ok, thanks for your help.

ASSISTANT: Thank you for choosing our agency.