You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Jonathan Robinson. I had planned to go on a trip, but it was postponed due to some reasons. Can you change my recent reservation?

ASSISTANT: Sure, please give me a minute.

USER: Ok, take your time.

ASSISTANT: Please give me your travel dates.

USER: I want to fly on 08/22 and 08/24.

ASSISTANT: Can I know your airport codes?

USER: I want to travel from ATL to DCA.

ASSISTANT: Please give me a minute.

USER: Ok.

ASSISTANT: The flight 1018 of Delta airlines is available on your requested dates with a price of 100 and with 1 connection.

USER: Proceed to booking.

ASSISTANT: Jonathan, your reservation has been successfully changed.

USER: Thank you for your help.

ASSISTANT: You are welcome.