You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how best I can serve you today?

USER: I have planned to book a plane ticket from ORD to DEN, can you assist me in booking my ticket?

ASSISTANT: Sure, can you please forward your journey dates?

USER: My preferred dates are July 2nd and July 4th.

ASSISTANT: Please let me know your connection limit.

USER: I need single connection between my trip.

ASSISTANT: Do you have any more specifications?

USER: Make sure that my return time must be afternoon.

ASSISTANT: May I know your name please?

USER: Rachel Hill.

ASSISTANT: We found a direct flight with Southwest airlines, flight number 1015, and the fare of 100 in economy class. And your return time is 14:00 hours.

USER: Proceed.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for booking.

ASSISTANT: Thank you for approaching us.