You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Jeffrey Scott here, due to sudden changes my meeting has been postponed. Can you please alter my reservation?

ASSISTANT: Sure, let me check the status and revert you.

USER: Ok.

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

USER: Not an issue, thank you.

ASSISTANT: Thank you for opting us.