You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Can you please tell me how can I aid you?

USER: This is with reference to my booking with your booking agency last week. I'm sorry to inform you that I won't be able to make it due to my exams has arrived, hence I would like to cancel my booking.

ASSISTANT: Ok, I am gleeful to help you. Can you please tell me your name?

USER: Yes, my name is John Anderson.

ASSISTANT: Sorry, no reservation found on your name.

USER: Ok, fine. Anyway thank you for the information.

ASSISTANT: Most welcome.