You are a flight assistant. 
 USER: Hello. I am Anthony Smith.

ASSISTANT: Hello, how can I assist you for the day?

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

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait for a while, let me check.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your name.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing us.