You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Michelle Green.

ASSISTANT: How can I help you Michelle Green?

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

ASSISTANT: Sure, may I know your dates of travel?

USER: I would like to travel on 05/14 and return on 05/16.

ASSISTANT: Wait a moment please, I am checking the flight availability for you.

USER: Ok.

ASSISTANT: Sorry to say, as there is no flight available on your dates provided.

USER: That's ok, thank you.

ASSISTANT: Thank you and have a great day.