You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be at your service today?

USER: Can you help me to book a flight ticket from DEN to LAS?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My trip dates are 21 to 23 of Feb.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight.

ASSISTANT: Please help me with your name for booking.

USER: I am Matthew Lee.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 100 with flight number 1012. Shall I proceed with this flight?

USER: Please proceed.

ASSISTANT: Your booking is done in jet Blue airlines.

USER: Thanks for helping me.

ASSISTANT: Thank you for choosing us.