You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: Can you please book a flight ticket from EWR to MSP?

ASSISTANT: Sure, please share your trip dates.

USER: Sure, my trip dates are Mar 17 and Mar 19.

ASSISTANT: In which class do you prefer to travel.

USER: Yes, I want a ticket in business class.

ASSISTANT: Do you prefer a direct or connecting flight?

USER: I am comfortable with any flight.

ASSISTANT: May I know your name?

USER: My name is Mark Miller.

ASSISTANT: Do you have any other specifications?

USER: No.

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

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for choosing us.