You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would like to book a  flight ticket from IAD to visit Olympic National Park in DCA, can you please help me in booking?

ASSISTANT: Sure, please share your journey dates?

USER: Sure, I am planning to start on 10/14 and my return date will be on 10/16.

ASSISTANT: Do you have any specifications?

USER: I prefer to fly with the connecting flight.

ASSISTANT: Is there any class preference?

USER: No, please proceed.

ASSISTANT: May I know your good name?

USER: I am Joshua Jackson.

ASSISTANT: We found a flight in Delta airlines, flight number is 1011 with single connection and price is 200 economy class. Shall I proceed?

USER: That's fine, you can book the ticket.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help in booking.

ASSISTANT: Thank you for choosing us.