You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how best can I support you today?

USER: Can you please aid me to reserve a plane ticket from AUS to reach DFW?

ASSISTANT: Sure, when do you want to depart and return on?

USER: Thank you. I want to departure on Sept 12 and return back on Sept 14.

ASSISTANT: Do you need a connecting flight?

USER: I prefer a single connecting flight.

ASSISTANT: Do you have any specifications?

USER: I need a flight which is departing in the afternoon time and returning in the morning time.

ASSISTANT: Can I know your good name?

USER: My name is Andrew Collins.

ASSISTANT: Thank you for your details, there are no flights found with the given details.

USER: It's ok, not a problem with that. Thank you for searching the flights.

ASSISTANT: Thank you.