You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am looking for a flight from DEN to DFW, can you help me?

ASSISTANT: Sure, may I know your planned travel dates please? Do you have any class preference?

USER: My travelling dates are 26 and 28 of May.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I need a connecting flight.

ASSISTANT: Do you have any class preference?

USER: I prefer to travel in business class.

ASSISTANT: May I know your good name please?

USER: I am Mark Wilson.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: There is a flight available on your requested dates from Hawaiian Airlines with arrival time 22 PM and depart time 14 PM, shall I confirm your booking?

USER: Please proceed to booking.

ASSISTANT: Your ticket is booked with flight 1019.

USER: Thanks for helping me.

ASSISTANT: You are welcome.