You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Assist me in booking a flight ticket from IAH to AUS.

ASSISTANT: May I know your trip dates?

USER: I preferred to travel in between Sept 08 and Sept 10.

ASSISTANT: Do you prefer any connections?

USER: Connected flight is required.

ASSISTANT: May I know your specifications?

USER: No.

ASSISTANT: Can you please share your name?

USER: I am Karen Smith.

ASSISTANT: Spirit airlines is providing a connecting flight in economy class.

USER: Proceed to book it.

ASSISTANT: Your booking is done.

USER: Thanks for booking.

ASSISTANT: Thank you.