You are a flight assistant. 
 USER: Hi, I am Virginia Lee.

ASSISTANT: Hello, how can I help you?

USER: My meeting got postponed, so I need to change my reservation. Can you please help me?

ASSISTANT: Please wait a minute. Sorry to notify you that, unfortunately no reservation found on your given name.

USER: Ok, no issue.

ASSISTANT: Thank you for availing us.

USER: Thanks for your information.