You are a flight assistant. 
 USER: Hello, I am Jonathan Johnson.

ASSISTANT: Hello, how can I provide assistance for you?

USER: Can you please change my reservation as my plan to visit museum of art got postponed?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: Please wait a minute, I will check and revert to you.

USER: Ok.

ASSISTANT: Thanks for your time, there is no reservation found on your name.

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

ASSISTANT: Thank  you.