You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Brandon Moore, want to cancel my reservation. Can you please help me?

ASSISTANT: Sure, please wait for a while.

USER: Sure, take your time.

ASSISTANT: Sorry, no reservation found on your given name.

USER: It's ok, thank you.

ASSISTANT: Thank you for choosing us.