You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I lend a hand to?

USER: I would like to change my reservation as my meeting got postponed, can you please help me out?

ASSISTANT: Sure, I am here to help you for this. Let me check your reservation status in our database.

USER: I am Benjamin Smith. Ok.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: I found your reservation. May I know your new airport codes?

USER: My airport codes are from DEN to ORD.

ASSISTANT: Could you please share me your travel dates?

USER: My travel dates are from 08/25 to 08/27.

ASSISTANT: Is there any other specifications regarding your journey?

USER: I would like to travel in economy class.

ASSISTANT: Do you have any preference?

USER: I need a connecting flight.

ASSISTANT: As per your information, there is a flight with Hawaiian Airlines and the ticket fare is 200. Shall I proceed for this?

USER: You can proceed.

ASSISTANT: Your ticket is reserved in economy class with the flight-1022. Your depart time is 21:00 PM and again your arrival time is 14:00 PM.

USER: Thank you.

ASSISTANT: Thank you very much for contacting our agency.