You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

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

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

USER: My trip dates are from Nov, 09 to Nov, 11.

ASSISTANT: Sure, please let me know your preferences.

USER: I need to depart in the afternoon.

ASSISTANT: Ok, may I know your name?

USER: My name is Larry Martinez.

ASSISTANT: Please be online for a while. Let me check.

USER: Ok.

ASSISTANT: There is a direct flight available with Southwest airlines and the ticket fare is 100 only. Can I book the ticket for you?

USER: Please proceed.

ASSISTANT: Your ticket is booked in economy class and your flight number is 1029.

USER: Thank you for booking.

ASSISTANT: You are welcome and thank you for choosing us.