You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Dennis Harris.

ASSISTANT: How can I help you at this moment?

USER: I would like to go for a round trip with my family. Can you please help me to book a single connection of flight?

ASSISTANT: Sure, I will help you with that. Can you please mention your preferable travel dates?

USER: My travel dates are July 26 to July 28.

ASSISTANT: May I know your region airport code name?

USER: My airport code is AUS.

ASSISTANT: Do you have any another specifications?

USER: My price limit is 200.

ASSISTANT: Sorry no flights are available in this route as per your requested dates.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for reaching us, have a nice day.