You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: My exam dates are postponed.Can you please help me for cancelling the recent reservation?

ASSISTANT: Sure, I am happy to help you.

USER: Thank you.

ASSISTANT: Give me a minute.

USER: Sure, take your time.

ASSISTANT: I am sorry to say that there is no reservation found.

USER: Please recheck on the name of Robert Turner.

ASSISTANT: Please may I know your name.

USER: My name is Robert Turner.

ASSISTANT: That's fine.

USER: Thank you for your information.

ASSISTANT: Thank you for contacting us.