You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Nancy Hill.

ASSISTANT: How can I help you?

USER: My holiday trip has been cancelled. So, I need your help to cancel my reservation.

ASSISTANT: Sure Nancy, please wait a moment I'll check the details of your reservation.

USER: OK.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: That's OK. Thank you for the information.

ASSISTANT: You are welcome. Have a nice day!.