You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I am planning to visit Houston for my business trip. So can you book a flight ticket for me?

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

USER: The travel dates are from Dec 09 to Dec 11.

ASSISTANT: Could you please share me your source airport code?

USER: The airport codes are from DEN to IAH.

ASSISTANT: Do you have any airline preference?

USER: No, I do not have any preferences. You can go ahead with the flight ticket booking.

ASSISTANT: Sure, can I know your name please to proceed further?

USER: I am Matthew Davis.

ASSISTANT: Hawaiian Airlines is providing direct flight with the ticket fare of 500 and depart time is 8:00 AM, arrival time is 5:00 AM. Shall I proceed?

USER: I am ok with the airlines and fare. You can book the flight ticket.

ASSISTANT: Your ticket has been confirmed by flight number 1025 and an business class.

USER: Thank you.

ASSISTANT: Thanks for choosing us.