You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I want to change my reservation due to postponed of my meeting, so please help me.

ASSISTANT: Sure, may I know your good name?

USER: Sure, my name is Barbara Perez.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, we are glad to inform you that we found a reservation on your name. May I know your journey dates?

USER: My journey dates are on Dec 21 to Dec 23.

ASSISTANT: Let me know your airport codes?

USER: My airport codes are DTW - AUS.

ASSISTANT: Do you prefer a lay by flight?

USER: Yes, I need it.

ASSISTANT: We found a connecting flight 1028 in Hawaiian airline the price is 100 with a economy class. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for helping me.

ASSISTANT: Thank you.