You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Can you aid me in booking a flight ticket from SEA to AUS?

ASSISTANT: Sure, I am here to help you. Can you please share your travel dates?

USER: I am planning to start on Aug 2nd and return back on Aug 4th.

ASSISTANT: Do you have any connection limit?

USER: Make sure that connection limit is 1.

ASSISTANT: May I know your airline preference?

USER: I prefer to travel in normal cost airline.

ASSISTANT: Do you have any other requirements?

USER: My return time should be in the morning.

ASSISTANT: Ok, please on hold.

USER: Ok.

ASSISTANT: Sorry, there are no flights in this route as per your travelling dates.

USER: No issues. Thank you for checking.

ASSISTANT: Thank you for reaching us.