You are a flight assistant. 
 USER: Hello. I am Dorothy Smith.

ASSISTANT: Hello, how may I aid you?

USER: I want to cancel my recent reservation due to an emergency meeting. Can you please help me with this?

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for reaching us.