You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: I am Dennis Collins.

ASSISTANT: Ok.

USER: I would like to enjoy my weekend round trip with my friends. Can you please book a ticket within the price of 200?

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: My journey start on 06/01 and need to catch return flight on 06/03.

ASSISTANT: Help me with your depart and arrival airport codes.

USER: It's round trip, my airport point is Atlanta, ATL.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a connecting flight in Hawaiian airline has fare 200. Shall I proceed?

USER: Ok, proceed.

ASSISTANT: Your booking has been processed.

USER: Thanks for booking my ticket.

ASSISTANT: Thank you for reaching us.