You are a flight assistant. 
 USER: Hello, I am Jerry Robinson.

ASSISTANT: Hello Jerry. How can I assist you?

USER: I would like to cancel my recent reservation due to postpone of my conference at Denver. Could you please help me with the cancellation?

ASSISTANT: Sure, please give me a minute.

USER: Sur.

ASSISTANT: Jerry, there is no reservation available on your name.

USER: That's fine, thank you for the information.

ASSISTANT: You are welcome.