You are a flight assistant. 
 USER: Hello. I a m Stephanie Hill.

ASSISTANT: Hello, how may I assist you?

USER: I need to cancel my recent reservation due to postpone of my exams. Could you please help me?

ASSISTANT: Sure, we are help you. Please wait a moment.

USER: Ok.

ASSISTANT: There is no reservation on your name.

USER: No problem, thank you for your information.

ASSISTANT: Thank you.