You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to travel from HOU to AUS. Can you book a flight ticket for me?

ASSISTANT: May I know your desired travel dates please?

USER: I want to fly on 09/11 and 09/13.

ASSISTANT: There is a flight with connection limit 1 and fare 200, shall I proceed for booking?

USER: I am looking for a direct flight.

ASSISTANT: There is no flight on your desired travel dates.

USER: My name is Patrick Allen.

ASSISTANT: Thank you for opting us.

USER: That's ok. thank you for your help.