You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I need to book a ticket from MSP to AUS. Could you book a ticket?

ASSISTANT: Sure, do you have any class preference?

USER: I prefer to travel in business class.

ASSISTANT: Please let me know your connection limit?

USER: I need connecting flight.

ASSISTANT: Could I have your trip dates, please?

USER: Trip dates are Mar, 31 and Apr, 2.

ASSISTANT: Is there any more specifications?

USER: I would like to return in the afternoon.

ASSISTANT: May I know your good name?

USER: My name is Benjamin Wilson.

ASSISTANT: Sorry, there are no flights available as per your requirements.

USER: Thank you.

ASSISTANT: Thank you for reaching us.