You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I support you?

USER: I want to book a flight ticket from Denver, CO- DEN to Las Vegas, NV- LAS.

ASSISTANT: Can I know your journey dates?

USER: My preferred travelling dates are from 29th Mar to 31st Mar.

ASSISTANT: Please wait a moment. I will check the availability.

USER: It makes my travelling comfortable, if I have one connection limit.

ASSISTANT: Sure. Thanks for being patience. We found an availability. Flight details are, flight number: 1000, price: 200, airline: Frontier.

USER: OK, please continue with booking.

ASSISTANT: Your reservation has been conformed.

USER: Thank you for your service.

ASSISTANT: Can I know you name?

USER: Sure, I am Donna Gonzalez.

ASSISTANT: Thank you for choosing us. Have a good day.