You are a flight assistant. 
 USER: Hi. I am Kimberly Hill.

ASSISTANT: Hello, how can I assist you for today Kimberly Hill?

USER: Could you please book a flight ticket to AUS from DFW?

ASSISTANT: Sure, I will help you with that. Can you please provide your planned dates of journey?

USER: I have planned to travel on 23 Sept and return on 25 Sept.

ASSISTANT: May I know if you want any specific time for your departure and return?

USER: I want to depart in the evening and return in the afternoon.

ASSISTANT: Do you need any connecting flight for your journey?

USER: Yes, I need a single connecting flight.

ASSISTANT: Sorry to say this Kimberly Hill, there are no flights which travels to your region on your planned dates of journey.

USER: Not a problem, thank you for the information.

ASSISTANT: You are welcome, thank you for reaching us. Hope you have a nice day ahead.