You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Sarah Lewis. I want to go AUS next month for my upcoming film shooting purpose, can you help me in booking flight ticket from HOU?

ASSISTANT: Sure Sarah, may I know your journey dates please for enhanced search of flights?

USER: I want to take off on 12/06 and book my return ticket also on 12/08.

ASSISTANT: Please wait for a minute.

USER: Please make sure that I want a direct flight.

ASSISTANT: There are no direct flights available with your preferences, Sarah.

USER: Oh! It's ok no problem, I will go with another airline. Thank you for your information.

ASSISTANT: Thank you for choosing us.