You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you at this moment?

USER: I had a business meeting in Las Vegas, so I need to make a flight ticket from Washington. Can you aid me?

ASSISTANT: Sure, I will aid you, may I know your airport codes?

USER: The airports that I prefer to travel are IAD and LAS.

ASSISTANT: Can you please share your travelling dates?

USER: My travelling dates are 04/19 and 04/21.

ASSISTANT: I found a flight that Frontier airline with connection 1 price 100 as per your details, can I proceed to booking?

USER: Ok. Please book the ticket with name Benjamin Hill.

ASSISTANT: Hill, your ticket is confirmed by flight number 1004.

USER: Thank you for your help.

ASSISTANT: My pleasure, have a nice travel.