You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me in cancel my recent reservation?

ASSISTANT: Sure, I am glad to help you. May I know your name please?

USER: Donna Walker.

ASSISTANT: Ok, please wait for a couple of minutes.

USER: Sure.

ASSISTANT: Sorry to say that, no reservation was found on your name to cancel.

USER: Ok, thank you.

ASSISTANT: Thank you for choosing us.