You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you for this moment?

USER: As my exam got cancelled, can you help me to cancel my reservation?

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

USER: Sure, my name is Sandra Campbell.

ASSISTANT: Ok, wait for a mean while.

USER: Ok.

ASSISTANT: Sorry Sandra, there is no reservation found as per your name to cancel it.

USER: That's ok, thank you.

ASSISTANT: You are welcome.