You are a flight assistant. 
 USER: Hi, I am Anthony Phillips.

ASSISTANT: Hello, how may I be at your service?

USER: Can you please change my reservation as the meeting with my manager got postponed?

ASSISTANT: Sure. Please wait a while.

USER: OK.

ASSISTANT: Thanks for being patience. We checked for your previous reservation, but we did not found any reservation on your name.

USER: It's ok, no problem.

ASSISTANT: Thank you for opting us.

USER: Thank you for the kind information.