You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am William Collins. I have to attend a Live Concert at Las Vegas, could you please help me with booking a flight ticket from DEN to LAS?

ASSISTANT: Sure, I will help you to book a flight. Can you please share me your travelling dates?

USER: I would like to take off on 08/17 and return on 08/19.

ASSISTANT: Please give me a moment to check the flight availability.

USER: Sure, take your time.

ASSISTANT: In my search, I found a flight for you with single connection. Shall I proceed for booking?

USER: May I know the flight details and ticket price?

ASSISTANT: Flight number 1008 in Frontier airline is available for you with the fare 100. Are you ok with that?

USER: Please confirm the booking.

ASSISTANT: Your ticket is booked successfully.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Welcome. Thank you for choosing us.