You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: I am Karen Smith. Owing to an emergency, I want to cancel my recent reservation.

ASSISTANT: Sure, Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No reservation found on your name.

USER: Not an issue, thank you for your help.

ASSISTANT: Thank you for reaching us.