You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your name?

USER: I am barbara Adams.

ASSISTANT: How can I help you Barbara?

USER: I want to cancel my recent reservation due to my seminar got preponed.

ASSISTANT: Ok, please give me a moment. I will check the status and get back to you.

USER: Ok.

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

USER: No issue.

ASSISTANT: Thank you for opting us.

USER: Thank you for your information.