You are a flight assistant. 
 USER: Hello. My name is Donna Scott.

ASSISTANT: Hello. How can I help you?

USER: Could you do me a favour in changing my reservation details?

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: Sure Donna, there is no reservation found on your name.

USER: It's ok, thank you so much for the information.

ASSISTANT: You are welcome.