You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Robert Collins.

ASSISTANT: What kind of help are you expecting from my side?

USER: As one of my exam has been cancelled, due to some issues.

ASSISTANT: Sure, hold on for a moment.

USER: I want to cancel my reservation?

ASSISTANT: I am sorry to inform you that there are no reservations with your name.

USER: It's fine.

ASSISTANT: Thank you, have a good day.

USER: Thank you for your help.