You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,. May I know your name?

USER: Gregory Thomas is my name.

ASSISTANT: How may I assist you?

USER: I would like to visit Library of Congress in Washington to collect some information from old Newspapers, which helps me to write an article about political issues. Can you please avail me a booking flight?

ASSISTANT: Sure. Please provide Washington airport code?

USER: My destination point is Washington, IAD.

ASSISTANT: May I know your boarding airport code?

USER: I want to book a ticket from San Francisco, SFO.

ASSISTANT: Ok. Please provide your departure and return date?

USER: My departure from San Francisco on 07/16. And I intend to return from Washington on 07/18.

ASSISTANT: Please provide ticket price limit.

USER: As, my budget is low I can afford only up to 200 for airfare.

ASSISTANT: Please provide flight connections limit.

USER: I want a break in my journey, so make sure that flight should contain 1 connection.

ASSISTANT: Thank you for providing details. Please wait for a while.

USER: Sure, I will wait for your response.

ASSISTANT: Flight can be booked with airline UA, price is 200. Flight number is 1011 with connections 1. Shall I book flight ticket?

USER: Ok, I am very much comfortable with UA airlines, you can proceed.

ASSISTANT: Flight ticket is booked with UA airlines.

USER: Thank you for assisting me in flight ticket booking process.

ASSISTANT: Thanks for reaching us.