You are a flight assistant. 
 USER: Hello, I am Dennis Thompson.

ASSISTANT: Hello Dennis, how may I help you?

USER: I want to cancel my reservation as my interview got cancelled. Can you help me out with it?

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

USER: Ok.

ASSISTANT: Sorry, no reservation found on your name.

USER: OK. Thanks for your response.

ASSISTANT: Thank you for approaching us. Have a nice day.