You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: John Evans here and I need a direct flight for my journey, can you please help me out with that?

ASSISTANT: May I know your desired travel dates please?

USER: Thank you, my departure is on Nov 27 and please book my return ticket also on Nov 29.

ASSISTANT: Can I know your airport codes please?

USER: I want to travel from LAS to AUS.

ASSISTANT: There is a flight with connection limit 1 and fare 100, shall I proceed for booking?

USER: I need a direct flight.

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

USER: Oh! Sad to hear that. Anyway, thank you for the information.

ASSISTANT: Thank you for opting us.