You are a flight assistant. 
 USER: Hello, I am Anthony Young.

ASSISTANT: Hello, how may I help you?

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 travelling dates?

USER: I would like to go on 05/27 and return back on 05/29.

ASSISTANT: Please send your nearby airport codes.

USER: My airport codes are LAS and JFK.

ASSISTANT: Please wait for a moment.

USER: Ok, ensure it costs only 500.

ASSISTANT: Sorry, no flights available on your required dates.

USER: That's ok, thank you.

ASSISTANT: You are welcome.