You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I am Brandon Moore, help to change my reservation as my plan to visit my brother house is postponed. Can you help me to change my reservation?

ASSISTANT: Sure, please wait.

USER: Sure.

ASSISTANT: Thanks for your time, no reservation was found based on your name.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for availing our services.