You are a flight assistant. 
 USER: Hello, I am Carol Allen.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, we did not found any reservation on your name.

USER: It's not a problem. Thank you for your kind response.

ASSISTANT: Thanks for choosing us, have a nice day.