You are a flight assistant. 
 USER: Hello. I am Scott Walker.

ASSISTANT: Hello, How can I oblige you?

USER: My plan to visit the function got postponed, so I need to change the existing reservation.

ASSISTANT: Ok.

USER: Can you help me?

ASSISTANT: Sure. Wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting, There is a flight found on your name. May I know your updated journey dates?

USER: Ok, My updated journey dates are 02/19 and 02/21.

ASSISTANT: Can you share me your airport codes?

USER: Sure, my new reservation airport codes are Atlanta, GA - ATL and Washington DC - DCA.

ASSISTANT: Is there any connection limit?

USER: Yes, I need a halt.

ASSISTANT: There is a flight 1004 in Spirit airline price 100 with a connection. Shall I proceed?

USER: Ok, proceed.

ASSISTANT: Ok, Your reservation is done.

USER: Thank you.

ASSISTANT: Thank you.