You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I want to attend my business meeting, could you book my ticket from AUS to DCA?

ASSISTANT: Sure, when are you willing to travel?

USER: My itinerary dates are Feb 14 and 16.

ASSISTANT: May I know your name please?

USER: Samuel Rodriguez here.

ASSISTANT: Do you have any specifications to be met?

USER: I want to return from DCA in the morning. I prefer to travel in business class and I need a direct flight.

ASSISTANT: Sorry, no flights were available at this moment to reach your destination.

USER: No problem, thank you.

ASSISTANT: Thank you for opting us.