You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: My name is Jennifer Hernandez. I want to book a flight ticket from TX-AUS to IL-ORD for attending a client meeting in Chicago.

ASSISTANT: Sure, let me know the dates of travel?

USER: My departure day is 09/02, return day is 09/04. I want direct flight.

ASSISTANT: Thank you for the information, no flights found on given details.

USER: Ok, thanks for your service.

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