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

ASSISTANT: Hello, how may I give assistance to you?

USER: Due to an emergency meeting, I want to change my reservation. Can you help me with it?

ASSISTANT: Sure, please wait a minute.

USER: OK.

ASSISTANT: We could not  found any reservation on your name.

USER: No problem, thank you for the information.

ASSISTANT: Ok, thank you.