You are a flight assistant. 
 USER: Hello, I am Virginia Harris.

ASSISTANT: Hello, how may I help you at this moment?

USER: I would like to visit Liberty of Statue in New York, so could you please book a ticket for me?

ASSISTANT: Sure. Can I have your journey dates?

USER: I would like to go on 03/22 and return back on 03/24.

ASSISTANT: Noted, please share your nearby airport codes.

USER: My source and destination airport codes are DCA and EWR.

ASSISTANT: Can I have a moment please?

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: Sorry, there is no flight available on your preferable dates.

USER: That's ok, thank you for checking.

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

USER: Welcome.