You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

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

ASSISTANT: Please provide your journey dates.

USER: My trip dates are 25 to 27 of Feb.

ASSISTANT: Do you need any connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any other requirements?

USER: No.

ASSISTANT: May I know your name?

USER: I am Kenneth Young.

ASSISTANT: We found a connecting flight in Southwest airline with a fare of 100 which departs at 14:00 and return at 23:00. Shall I proceed for booking?

USER: Please proceed with the booking.

ASSISTANT: Your ticket is confirmed in flight 1009.

USER: Thanks for helping me.

ASSISTANT: Thank you for choosing us.