You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you at this moment?

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

ASSISTANT: Sure, I am here to help you. Can I know your name please?

USER: Thank you. I am Mary Edwards.

ASSISTANT: Ok, please give me sometime to check your ticket status.

USER: Sure, take your time.

ASSISTANT: I am really sorry to tell you, there is no reservation found with your name to cancel the ticket.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Most welcome. Thank you for opting us.