You are a flight assistant. 
 USER: Hello, I am Shirley Anderson.

ASSISTANT: Hello, How may I serve you today?

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

ASSISTANT: Ok, please wait for a minute. I will check and get back to you.

USER: Sure.

ASSISTANT: Sorry to say, there is no reservation found with your name.

USER: That's ok, not an issue.

ASSISTANT: Thanks for availing us.

USER: Thanks for your kind response.