You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I would like to cancel my flight reservation, can you please help me out?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: I am Debra Walker.

ASSISTANT: Ok, wait for a while.

USER: Sure.

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

USER: No problem, thank you for checking.

ASSISTANT: Thank you for choosing us.