You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Steven Edwards.

ASSISTANT: How can I help you?

USER: I need to cancel my reservation due to some personal issues.So can you help me with cancellation of my reservation?

ASSISTANT: Just a moment please. I am sorry no reservation found on your name.

USER: Sure. Not an issue, thanks for your information.

ASSISTANT: Thank you for choosing us.