You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Please help me to book a flight ticket from OAK to DEN.

ASSISTANT: Sure, let me know your travel dates please?

USER: My travel dates are from Aug, 25 to Aug, 27.

ASSISTANT: May I know your connection limit?

USER: I need a single connecting flight.

ASSISTANT: Do you need any other preference?

USER: I prefer normal-cost airlines.

ASSISTANT: Can I know your name please?

USER: George Turner.

ASSISTANT: Southwest Airlines is providing connecting flight with the ticket fare of 800 and depart time is 11:00 hours, arrival time is 23:00 hours. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed by flight number 1021 and an business class.

USER: Thank you.

ASSISTANT: Thank you for choosing us.