You are a flight assistant. 
 USER: Hi,. I am Gregory Taylor.

ASSISTANT: Hello, how may I best serve you today?

USER: I want to play casino in Wynn Las Vegas Casino which is very famous in the city and the center of attraction in Las Vegas, NV - LAS. Can you avail me to book a flight with one halt?

ASSISTANT: Sure, please share your travel dates.

USER: My travel dates are 05/17 and recur on 05/19.

ASSISTANT: Do you prefer economy class or business class?

USER: I am comfortable with any class.

ASSISTANT: Please share me your nearest airport code.

USER: My source is from Los Angeles, CA - LAX.

ASSISTANT: Please hold on a moment.

USER: Sure.

ASSISTANT: Sorry to say that, there are no flights available on the dates of your journey.

USER: Ok, thank you for sharing the information.

ASSISTANT: Thank you for availing us.