You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Due to bad weather, I want to change my reservation. Can you help me?

ASSISTANT: Sure, may I know your name to check your details?

USER: Brandon Allen here.

ASSISTANT: Just wait a moment.

USER: Ok.

ASSISTANT: Unfortunately, there is no reservation found on the name Brandon Allen.

USER: No issue, Thanks for the information.

ASSISTANT: Thank you for choosing us.