You are a flight assistant. 
 USER: Hello, I am Gary Phillips.

ASSISTANT: How may I aid you at this moment?

USER: Can you please book me a flight ticket from Las Vegas, NV - LAS to reach New York, NY - JFK?

ASSISTANT: Ok, please share your travel dates to search a flight for you?

USER: My trip dates are 06/06 - 06/08.

ASSISTANT: Sorry Gary, this time we can't serve you because we don't have flights on your dates.

USER: It's ok, thank you.

ASSISTANT: Thanks for consulting us, have a great day.