You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you out?

USER: David Martin here.

ASSISTANT: Nice to meet you Martin.

USER: I would like to book a ticket from IAD to LAS, can you please help me with that?

ASSISTANT: Sure, I will help you in flight ticket booking. May I know your moving dates to that location?

USER: The travel dates are from 12/19 to 12/21.

ASSISTANT: Please be on hold for a while to check the flight on your dates. I found a Frontier airlines with a ticket fare of 100 and there is a 1 stop over in your journey in the flight 1000, can I confirm your flight ticket booking?

USER: Please proceed with that.

ASSISTANT: Ok, I have confirmed your ticket booking. Enjoy your flight journey.

USER: Thank you for your help.

ASSISTANT: You are welcome.