You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I provide assistance for you?

USER: Elizabeth Moore here. Please help me out in booking a ticket from DEN to LAS.

ASSISTANT: May I know your travelling dates to proceed further for the booking process?

USER: Sure, my preferred travelling dates are 02/05 and 02/07.

ASSISTANT: Just hold on a moment, I will check flight availability in this route.

USER: Ok, take your time.

ASSISTANT: Ok, there is a flight in UA airline matching your details with price 100 and connection 1. Shall I proceed?

USER: Ok, please proceed further.

ASSISTANT: Ok, your booking is done with flight 1020.

USER: Thank you for your immediate response on my request.

ASSISTANT: You are welcome, have a safe journey.