You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I want to change my existing reservation due to some health issue. Can you help me for this one?

ASSISTANT: Sure, we are here to help you. May I know your name please to proceed further?

USER: Sure, Laura Phillips here.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: I found your reservation, can you please share me your new airport codes?

USER: Sure, my new airport codes are CLT-DTW.

ASSISTANT: Let me know your travel dates please?

USER: My planned travel dates are 08/11 and 08/13.

ASSISTANT: Ok, is there any class preference?

USER: Yes I want economy class with single halt.

ASSISTANT: Do you need any other specifications?

USER: No more, thank you.

ASSISTANT: Hawaiian Airlines is providing connecting flight with the ticket fare of 300 and depart time is 9:00 AM, arrival time is 10:00 AM. Shall I proceed?

USER: Yes, you can proceed with that booking.

ASSISTANT: Your ticket has been confirmed by flight number 1025 and an economy class.

USER: Thank you for the booking.

ASSISTANT: Thanks for choosing us.