You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am planning to visit Washington DCA from LAS. Can you find a flight ticket for me?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: Ok, my travelling dates are on June 11 and return on June 13.

ASSISTANT: Do you have any specifications about flight connections?

USER: Yes, I need a single connecting flight.

ASSISTANT: Do you have any specifications about class?

USER: No, but I want to return in the afternoon time.

ASSISTANT: Please mention your name.

USER: Ok, my name is David Hill.

ASSISTANT: The Spirit airlines providing an economy class flight with price 300 and the connections 1. The return time is 12:00 hours. Shall I confirm your ticket?

USER: Please proceed with the ticket booking.

ASSISTANT: Your ticket is booked. The flight number is 1018.

USER: Thank you for your valuable time.

ASSISTANT: Welcome, have a great day.