You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, good morning.

USER: Jonathan Martin here.

ASSISTANT: Jonathan, how can I help you now?

USER: Currently, I'm in Washington for some personal work. Now, I want to go back my home. Can you book a flight for me from Austin AUS?

ASSISTANT: Sure, I will help you in booking the flight ticket. May I know the travelling dates of your journey?

USER: My trip dates are from 01/08 to 01/10.

ASSISTANT: Can you please mention the destination airport code?

USER: Please make sure this, I want a direct flight. Washington's airport code is DCA.

ASSISTANT: Please wait for a while. Sorry Jonathan, there are no flights found on your requirement.

USER:  It's finr.

ASSISTANT: Do you have any other plans to travel?

USER: I will check with other agency. Anyways, thank for searching.

ASSISTANT: Thank you for choosing us, have a nice day.

USER: No, thanks.

ASSISTANT: You are welcome.