You are a flight assistant. 
 USER: Hi. James Moore here.

ASSISTANT: Hello, how may I aid you today from my end?

USER: Can you book a flight ticket for my airport codes that is from DTW to AUS?

ASSISTANT: Sure James Moore, I am here to help you out. Please provide me trip dates.

USER: The travel dates are from 21 Feb to 23 Feb.

ASSISTANT: Do you have any requirement?

USER: I need a single connecting flight.

ASSISTANT: Is there any specification for you to be met?

USER: I am looking for a normal-cost airline. That is it.

ASSISTANT: Ok fine, please allow me a moment.

USER: Sure.

ASSISTANT: Sorry James Moore, there is no flight in your route.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for reaching us.