You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you for the day?

USER: I need to book a flight ticket from DTW to DFW. Can you help me in booking a connected flight?

ASSISTANT: Sure, could I have your journey dates, please?

USER: My journey dates are Mar 08 and Mar 10.

ASSISTANT: Do you have any class preference?

USER: I prefer a business class.

ASSISTANT: Is there any more specifications?

USER: I am looking for a departure flight time at afternoon.

ASSISTANT: May I know your good name?

USER: I am Alexander Edwards.

ASSISTANT: Sorry, there are no fights available on your route as per given requirements.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for choosing us.