You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Mark Allen.

ASSISTANT: How can I guide you at this moment?

USER: I am planning to book a ticket to meet my family at AUS. Can you please help em out to book a ticket from DFW?

ASSISTANT: Sure, I will help you with this. Can you please provide your travel dates to proceed further?

USER: These are my travelling dates 03/15 and return back on 03/17.

ASSISTANT: Wait a moment please.

USER: Make sure my connection limit is 0.

ASSISTANT: Mark Allen, there are no flight services available on this route with 0 connection limit.

USER: That's fine. Thank you for your service.

ASSISTANT: Thank you for contacting us.