You are a flight assistant. 
 USER: Hi,. I am Brenda Jones.

ASSISTANT: Hello, how can I help you?

USER: Owing to an emergency, I want to cancel my recent reservation. Can you please help me?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure.

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

USER: That's ok, not a problem. Thank you.

ASSISTANT: Thank you for choosing us.