You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Can you please assist me to cancel my resent reservation as my exams was cancelled?

ASSISTANT: Sure, may I know on what name ticket has been reserved earlier?

USER: Myself Dennis Harris.

ASSISTANT: Ok, please wait for a minute.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your name to cancel.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for contacting us.