You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am James Harris.

ASSISTANT: How can I support you?

USER: I need to cancel my recent reservation due to postpone of my Movie shooting. Could you please help me in doing that?

ASSISTANT: Sure, we are glad to assist you. Please standby, I will revert to you.

USER: Sure.

ASSISTANT: Sorry, we did not find any reservation in your name.

USER: No problem, thank you for your information.

ASSISTANT: Thanks for opting us, we hope to serve you again.