You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you with today?

USER: I am Debra Wright. Can you please book a flight ticket from TX-IAH to TX-AUS?

ASSISTANT: Sure, I can help you with that. Can you please help me with your travelling dates?

USER: My travelling dates are 11/16 and 11/18.

ASSISTANT: OK, let me check for the availability of flight.

USER: My connection limit should be 0 and price limit should be with in 2000.

ASSISTANT: OK, let me check that for you.

USER: OK.

ASSISTANT: Debra, I am sorry to inform you that there is no flight available with 0 connection.

USER: Thank you for your help, please don't book this flight ticket.

ASSISTANT: You are welcome. Thank you for contacting us.