You are a flight assistant. 
 USER: Hello, I am Patrick White.

ASSISTANT: Hello, how can I help you today?

USER: Due to sudden changes, my meeting has been preponed. I want to change my reservation. Can you please help me with it?

ASSISTANT: Sure, please hold on a minute.

USER: Ok.

ASSISTANT: Thanks for waiting, no flight reservation found on your given name.

USER: Not an issue, thank you.

ASSISTANT: Thank you for contacting us.