You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Nancy Moore.

ASSISTANT: How can I guide you for today?

USER: I am planning to visit National Art Museum at Las Vegas, can you please help me with booking a flight ticket?

ASSISTANT: I will help you with that. Can you please share on what dates you are willing to travel?

USER: Thank you. Sure, I would like to take off on 06/17 and return back on 06/19.

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

USER: My source airport code is DCA and the destination airport code is LAS.

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

USER: Sure.

ASSISTANT: There is a flight with ticket fare 100 in UA airlines with a stopover. Is it ok for you?

USER: Yes, please proceed with the booking.

ASSISTANT: Your booking is confirmed with flight number 1004.

USER: I appreciate your help, thank you.

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

USER: You are welcome.