You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: I am Charles Adams. I would like to book a ticket to Washington Dc, can you please help me out?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: I am travelling on these dates 07/31 and 08/02.

ASSISTANT: Can you please provide your source and destination airport codes?

USER: I am flying from SEA To IAD.

ASSISTANT: Please give me a minute, I will check the availability of flight on this route.

USER: Sure.

ASSISTANT: Here is a flight with ticket fare 200 in Southwest airlines with a stopover. Is it ok for you?

USER: Ok, you can proceed with this flight.

ASSISTANT: Your booking is confirmed with flight number 1022.

USER: Thank you for your services.

ASSISTANT: Thank you for contacting us, have a nice day.