You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I would like to travel from AUS to DTW to attend a science exhibition. Can you help me in booking a connected flight?

ASSISTANT: Sure, please share your journey dates?

USER: Sure, my journey dates are Mar 23 and Mar 25.

ASSISTANT: Do you have nay specifications?

USER: I would prefer return time at afternoon.

ASSISTANT: Is there any class preferences?

USER: I need a business class.

ASSISTANT: We found a flight in Frontier airlines, flight number is 1007 with single connection and price is 100 Business class. Shall I proceed?

USER: Yes, you can.

ASSISTANT: May I know your good name?

USER: Sure, William Lee here.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your kind service.

ASSISTANT: Thank you for choosing us.