You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Actually my Final Examination is postponed, so that I want to cancel my recent reservation. Can you help me?

ASSISTANT: May I know your name please?

USER: Sure, I am Ashley Wilson.

ASSISTANT: Sorry, there is no reservation found basis on your details.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Most welcome.