You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Nicole Lee. Due to some important work at my office, I need to cancel my reservation. Can you please help me?

ASSISTANT: Sure, please wait for a while.

USER: Sure.

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

USER: No problem.

ASSISTANT: Thank you for choosing us.

USER: Thank you.