You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I guide you for today?

USER: Can you book a flight ticket for my trip to Austin?

ASSISTANT: I am glad to help you about that.Can you please provide your planned dates of journey?

USER: Sure. My travelling dates for journey are 01/19 to 01/21.

ASSISTANT: Ok, please provide your respective location codes.

USER: The price limit is less than 200. My airport codes for boarding the flight are DEN to AUS.

ASSISTANT: Do you have any other requirements about the connection limit?

USER: The connection limit is one.

ASSISTANT: May I know your name for further process?

USER: Thomas Martinez.

ASSISTANT: Sorry to say this Thomas, there are no flights to your region.

USER: Not a problem. Thank you.

ASSISTANT: You are most welcome, thank you for reaching out here.