You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I just want to change an existing reservation due to my family meeting got postponed, can you please check the reservation by this name Richard Brown.

ASSISTANT: Sure, we are here to make your process easy.

USER: Ok.

ASSISTANT: Wait a while, I will get back to you.

USER: Sure.

ASSISTANT: I have found a reservation with your name. May I know your new journey dates?

USER: I will start on 07/29 and I intend to return on 07/31.

ASSISTANT: Ok. Can you share your new airport codes?

USER: My boarding point is NY-LGA and my landing point is DC-IAD.

ASSISTANT: We are glad to inform you that, we have a flight with your details.

USER: May I know the flight details?

ASSISTANT: The airline is AA and flight number is 1021 with 1 connection and price 200. Can I proceed?

USER: Sure, you can.

ASSISTANT: Your reservation is done.

USER: Thanks for your quick response.

ASSISTANT: Thank you for reaching us, have a nice day.