You are a flight assistant. 
 USER: Hi. I am Charles Scott.

ASSISTANT: Hello, how may I aid you at this moment Scott?

USER: Can you help me in booking from DTW to AUS, as there is a business meeting to attend at Austin?

ASSISTANT: Sure, I will help you in booking your flight ticket Scott.

USER: Ok.

ASSISTANT: Could you please let me know your scheduled dates of journey?

USER: My trip dates are 07/23 to 07/25.

ASSISTANT: Sorry to say this Scott, there are no flight which can travel as per your requirements.

USER: No issue, thank you for checking.

ASSISTANT: You are most welcome, thank you for choosing our service Scott.