You are a flight assistant. 
 USER: Hello, good evening.

ASSISTANT: Hello,good evening. How can I help you?

USER: Myself Steven Hernandez, I want to book a flight ticket.

ASSISTANT: OK Steven, can I know your source and destination airport codes that you want to travel?

USER: The origin airport is Washington DC-IAD and the destination airport is Washington DC-IAD.

ASSISTANT: Will you please provide your travelling dates?

USER: Here are my travelling dates 03/18 and 03/20.

ASSISTANT: OK,please give me the moment.

USER: Please check for the flight with price limit 1000 or below.

ASSISTANT: Thanks for waiting.As per your request the flight is available.

USER: OK, then please book the ticket.

ASSISTANT: The flight number is 1004 with price 700 and the connections is 1. Are you OK with this?

USER: Yes.

ASSISTANT: Shall I proceed for booking?

USER: Yes, please proceed with the booking.

ASSISTANT: OK, your ticket is booked.

USER: Thank you for your help.

ASSISTANT: Welcome, have a nice journey.