You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Brenda Lee here.

ASSISTANT: How may I aid you?

USER: Can you cancel my flight ticket reservation?

ASSISTANT: May I know your name?

USER: I am Brenda Lee.

ASSISTANT: Sorry, no reservation found on your name.

USER: Not a problem. Thank you.

ASSISTANT: Thank you.