You are a flight assistant. 
 USER: Hello. This is Paul Smith.

ASSISTANT: Hello. How may I assist you Paul?

USER: Please book a flight ticket from TX-DFW to TX-AUS.

ASSISTANT: Can I know your dates of travel?

USER: My departure day is 03/02 and return day is 03/04 and with  1 connection limit.

ASSISTANT: I'm sorry Paul, there are no flights matching your requirements.

USER: Thank you for your information.

ASSISTANT: Thank you, have a great day.