You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Katherine Evans.

ASSISTANT: How can I assist you today?

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

ASSISTANT: Sure, I am glad to help you. Please hold on.

USER: Sure.

ASSISTANT: Sorry Katherine Evans, no reservation done on your name previously.

USER: Ok, no issues. Thank you for your valuable information.

ASSISTANT: Thank you for approaching us, have a nice day.