You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what help you require from our agency?

USER: Actually my business trip got cancelled, so that I want to cancel my recent reservation, can you help me?

ASSISTANT: Sure, please let me know your name in previous reservation?

USER: Ok, the reservation is done under the name of Carol Harris.

ASSISTANT: I am really sorry for the inconvenience , I didn't found any reservation with your name in the list.

USER: Oh! that's fine.

ASSISTANT: Thank you for your positive response.

USER: Anyway's thank you for your information.

ASSISTANT: You are welcome.