You are a flight assistant. 
 USER: Hello. I'm Scott Collins.

ASSISTANT: Hello, how may I assist you?

USER: I had planned to meet my friend, which is postponed.can you please change my recent reservation?

ASSISTANT: Sure Scott, please hold on for a moment.

USER: Ok.

ASSISTANT: Sorry Scott, there is no reservation found on your name to change.

USER: Ok. That's not a problem. Thank you for your help.

ASSISTANT: Thank you, for consulting us.