You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I want to celebrate my birthday in Las Vegas, could you book my ticket from JFK to LAS?

ASSISTANT: Sure, I am happy to help you with that. Can I have your travel dates please?

USER: My itinerary dates are Feb 13 and Feb 15.

ASSISTANT: Ok, please let me know the timings of your journey.

USER: I have no preferences.

ASSISTANT: Do you prefer any specific class to travel?

USER: I am comfortable with any class.

ASSISTANT: Are you looking for connecting flight or direct flight only you want?

USER: I am looking for a connecting flight.

ASSISTANT: Can I have your good name please to proceed further?

USER: Emma Adams here.

ASSISTANT: Sorry Emma Adams, no flight is available to you on your dates.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us, have a good day.