You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Dorothy Hill. I would like to travel from TX-DFW to TX-AUS. Will you please book a ticket?

ASSISTANT: Sure. Please provide your trip dates.

USER: My travel dates are 08/06 and 08/08.

ASSISTANT: Do you have any other special requirements?

USER: Yes, price must be under 5000 with connection one.

ASSISTANT: Wait a moment I will inform you.

USER: Sure.

ASSISTANT: Sorry Dorothy Hill as per your requested dates there is no flight available.

USER: OK, that's fine. Any way, thank you for helping me.

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