You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I best assist you?

USER: I have made a reservation earlier to attend my meeting but suddenly meeting got postponed, so I need you to help me in changing my reservation.

ASSISTANT: Sure, we are happy to assist you.

USER: Thank you.

ASSISTANT: May I know your good name to check the reservation list?

USER: Sure, I have made my reservation on the name of Edward Martin.

ASSISTANT: Please wait a moment. I will check the reservation status and let you know.

USER: Sure, take your time.

ASSISTANT: Thanks for your patience. There was no existing reservation found on your name.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for availing us.