You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you now?

USER: As my exams got postponed I need to cancel my reservation, can you please help me?

ASSISTANT: Sure. To cancel your reservation, may I have your name please?

USER: I am Robert Turner.

ASSISTANT: Thanks for waiting.

USER: Ok.

ASSISTANT: Sorry, we did not find any reservation on your name to cancel.

USER: No problem.

ASSISTANT: Thank you for choosing us.

USER: Thanks for the information.