You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to book a ticket from TX-AUS to TX-AUS.

ASSISTANT: Can I know your travel dates?

USER: My travelling dates are 12/09 to 12/11.

ASSISTANT: Give me a minute, let me check the details. The flight 1019 of Delta airlines is available on your requested dates. Shall I book the ticket?

USER: My connection should be 0 and price is 500.

ASSISTANT: Sorry, there are no flights available with 0 connections.

USER: That's fine. Thank you for your help.

ASSISTANT: Welcome. Can I know your name?

USER: I am Mark Rodriguez.

ASSISTANT: Have a nice day.