You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Betty Davis, I want to change my reservation as I need a flight of low fare. Can you change my reservation?

ASSISTANT: Sure. Wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, There is no reservation found on your name.

USER: Ok, thank you for the details.

ASSISTANT: Thank you.