You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

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

ASSISTANT: Please provide your trip dates.

USER: My trip dates are Feb 1st and Feb 3rd.

ASSISTANT: Do you need any connection limit?

USER: I need a direct flight.

ASSISTANT: Do you need any other specifications?

USER: The depart time should be morning.

ASSISTANT: May I know your name?

USER: Jennifer Evans.

ASSISTANT: There are no flights available on your routes.

USER: Ok, thank you.

ASSISTANT: Thank you for opting us.