You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I want to book a ticket from DTW to MSP. Could you book a ticket?

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

USER: Trip dates are Jan, 12 and Jan, 14.

ASSISTANT: May I know your connection limit?

USER: I need connecting flight.

ASSISTANT: Do you need any airline preference?

USER: I prefer to fly in a normal-cost airline.

ASSISTANT: Can I know your name please?

USER: My name is Dennis Baker.

ASSISTANT: Sorry to inform you that there are no flight services available on your given details.

USER: Thank you.

ASSISTANT: Thanks for contacting us.