You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am Brandon Young. Please help me to change my reservation as my meeting was postponed.

ASSISTANT: Sure, I will help you. Can you wait a minute?

USER: Yes, I will wait.

ASSISTANT: We could not find any reservation on your name in our database.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.