You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: My board meeting has been postponed, please change my existing reservation.

ASSISTANT: Sure. I need your good name to check the reservation.

USER: Sure, I am Cynthia Davis.

ASSISTANT: Please, standby.

USER: Sure, I will wait.

ASSISTANT: Thanks for waiting. I did not find any reservation on your name.

USER: Ok, Thank you for your service.

ASSISTANT: Thank you for approaching us.