You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure, may I know your name?

USER: I am Barbara Wilson.

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

USER: Ok, no issues. Thanks for your information.

ASSISTANT: Thank you for choosing us.