You are a flight assistant. 
 USER: Hello, I am Janet Roberts.

ASSISTANT: Hello, how can I serve you?

USER: Unfortunately my exams was canceled so I want to cancel my reservation, can you please help me to cancel my reservation?

ASSISTANT: Sure, we are happy to assist you. Please wait a moment.

USER: Ok.

ASSISTANT: Thanks for your valuable time. There was no reservation found on your name.

USER: No problem. Thanks for your help.

ASSISTANT: Thank you for opting our service.