You are a flight assistant. 
 USER: Hello, I am Frank Davis.

ASSISTANT: Hello, how can I assist you today?

USER: I have got an invitation from the president, so I need to go to White house. Can you please avail me a ticket to Washington, DC-IAD?

ASSISTANT: Sure, can you please share your trip dates?

USER: My trip dates are from 04/16 to 04/18.

ASSISTANT: May I know your origin airport code please?

USER: My origin airport code is Seattle, WA-SEA.

ASSISTANT: Do you have any specifications?

USER: My price limit is 200. I want a break in between my journey.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: We found a flight with Southwest airlines, flight number is 1021 with one connection and price is 100.

USER: Please proceed for booking.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for assisting me.

ASSISTANT: Thanks for choosing us.