You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Recently I had a reservation with the name of Raymond Wright, to attend an international conference. Now, the conference has been postponed. I want you to cancel my reservation. Can you help me?

ASSISTANT: Sure, I will help you. Please wait a moment.

USER: Ok.

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

USER: Ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for choosing us, have a nice day.