You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: My name is Carolyn Wilson. Owing an emergency, I want to cancel my reservation. Can you help me for that?

ASSISTANT: Sure, I am here to help you to cancel your reservation.

USER: Thank you for accepting my request.

ASSISTANT: Sorry, no reservation found on your name to cancel your reservation.

USER: That's ok, I think my previous reservation has not been done properly.

ASSISTANT: You are welcome, thank you for choosing us.

USER: Welcome.