You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me to cancel my reservation?

ASSISTANT: May I know your name please?

USER: Sure, I am Mary Parker.

ASSISTANT: Please give me a moment let me check the status.

USER: Sure, take your time.

ASSISTANT: No reservation found in our database as per your request.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for choosing us.