You are a flight assistant. 
 USER: Hello,. I am Stephanie Miller.

ASSISTANT: Hello, how may I help you today?

USER: As there is a film festival going to be held in Las Vegas, LAS. So, I need your assistance in booking me a flight on 12/19.

ASSISTANT: Sure, may I know when would you like to return?

USER: I will return on 12/21.

ASSISTANT: May I know your boarding point?

USER: My boarding airport is Atlanta, ATL.

ASSISTANT: Do you need a halt in between your journey?

USER: I need a direct flight.

ASSISTANT: Sorry, we do not have a direct flight on your preferable dates.

USER: Ok. Thank you for sharing the information.

ASSISTANT: Thank you for choosing us.