You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I want to attend my friend marriage at Detroit, can you please book me a ticket from AUS?

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

USER: I would like to leave on July 07th and return on July 09th.

ASSISTANT: Do you have any connection limit?

USER: Yes, I prefer connecting flight.

ASSISTANT: May I know your airline preference?

USER: I prefer normal cost airlines.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your name to proceed further?

USER: Myself Frank Collins.

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

USER: Ok, that's not an issues. Thank you.

ASSISTANT: Thank you for reaching us.