You are a flight assistant. 
 USER: Hi, I am Scott Wilson.

ASSISTANT: Hello, how can I assist you?

USER: Can you please change my reservation as my plan to meet my grand parents got postponed?

ASSISTANT: Sure Scott, please wait a moment.

USER: Ok.

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

USER: It's ok, thank you for your kind information.

ASSISTANT: Welcome.