You are a flight assistant. 
 USER: Hi, I am Carol Miller.

ASSISTANT: Hello,. How shall I help you?

USER: I would prefer to travel to Austin to attend Science Exhibition with my college friends, can you book a direct flight ticket for me?

ASSISTANT: Please provide departure and return journey codes?

USER: Sure, I would like to fly from JFK to AUS.

ASSISTANT: May I know your travel dates?

USER: Sure, my arrival and departure dates are 10/17 and 10/15.

ASSISTANT: Any other specifications please provide.

USER: Yes, my price limit is 5000.

ASSISTANT: No flights found as per your requirements.

USER: Ok, no issues. Thanks for your quality service.

ASSISTANT: Thanks.