You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to visit Olympic National Park at Washington, could you please help me with booking a flight ticket from ORD to IAD?

ASSISTANT: Sure, I can help you with that. May I know your planned travel dates?

USER: I would like to depart on June 24th and return on June 26th.

ASSISTANT: May I know your class and airline preference please?

USER: I am comfortable with any class and airlines.

ASSISTANT: Can I have your good name?

USER: I am Ronald Hall.

ASSISTANT: Please let me know if you have any other specifications.

USER: I need a direct flight. And make sure that my return time must be morning.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time.

ASSISTANT: Delta airlines is providing a direct flight on that route with ticket fare of 200, it's departure time is 3:00 AM and return time is 17 PM. Shall I proceed for booking?

USER: Please confirm the booking.

ASSISTANT: I have successfully booked you an economy class ticket in flight-1017, have a safe journey.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thank you for choosing us.