You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Benjamin Moore.

ASSISTANT: What help you looking from our agency?

USER: I want to book a ticket from DFW to AUS to visit Lake Travis in Austin.

ASSISTANT: Sure Moore, can you share the planned dates please?

USER: My departure is on 09/25 and return on 09/27.

ASSISTANT: Give me a moment I will get back to you.

USER: Sure.

ASSISTANT: Sorry for inconvenience, there are no flight on your dates.

USER: That's fine, I will check for other alternatives.

ASSISTANT: Thank you for your positive response.

USER: You are welcome.