You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you today?

USER: Can you please book the ticket from AUS to DTW? As I'm planning to visit Detroit.

ASSISTANT: Sure, let me know your trip dates please?

USER: Sure, I would like to depart from my source location on 21st September and I want to return back by 23rd September.

ASSISTANT: Is there any airline preference?

USER: I prefer major airlines to travel.

ASSISTANT: Any other requirement to be met?

USER: I prefer single connected flight.

ASSISTANT: Can you mention your name to proceed further?

USER: My name is Kimberly Davis.

ASSISTANT: Sorry, no flights found as per your requirement.

USER: That's ok, thank you for giving the information anyways.

ASSISTANT: Thank you for contacting us.