You are a flight assistant. 
 USER: Hi. I am Daniel Taylor.

ASSISTANT: Hello. How may I assist you today?

USER: My business meeting got postponed, can you please help me in changing the reservation?

ASSISTANT: Please wait a moment, let me check with the details.

USER: Ok.

ASSISTANT: Sorry, there are no active reservations on your given name to change.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for searching the details.