You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you at this moment?

USER: Brandon Davis here. I would like to cancel my reservation as my exams cancelled, can you please help me with that?

ASSISTANT: Sure, I will help you. Please wait for a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Yes, I have found your reservation on your given name. Shall I cancel it?

USER: Yes, please cancel it.

ASSISTANT: Your ticket is been cancelled successfully.

USER: Thank you for your quick service.

ASSISTANT: You are welcome, have a nice day.