You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Can you aid me in booking a flight ticket from CLT to MSP?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: Sure, I would like to go on Mar 31st and return back on Apr 02nd.

ASSISTANT: Do you have any airline preferences?

USER: Ensure it is a normal-cost airline.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: Ensure it is a single connecting flight.

ASSISTANT: Do you have any other specifications?

USER: Ensure the depart time is in the evening.

ASSISTANT: May I know your good name please?

USER: Myself Benjamin Wilson.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: That's ok, thank you for checking.

ASSISTANT: You are welcome.