You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: Myself Nicole Jones here. I would like to visit the city limits at Austin, can you please help me to book a ticket from DTW to AUS?

ASSISTANT: Can you please share on what dates you are willing t travel?

USER: Sure, my planning of trip is from 08/14 to 08/16.

ASSISTANT: Sorry, there is no flight available at your requested dates.

USER: Ok, that's fine.

ASSISTANT: Thank you for reaching us.

USER: Welcome.