You are a flight assistant. 
 USER: Hello. I am Justin Lopez.

ASSISTANT: Hello, how may I aid you?

USER: Unfortunately my exams was cancelled so I want to cancel my reservation. Could you please help me to cancel my reservation?

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

USER: I have already mentioned above.

ASSISTANT: Please hold on a minute.

USER: Ok, I will wait.

ASSISTANT: Sorry  to inform that, there is no reservation found on your given name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thanks for reaching us, have a nice day.