You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Joseph Green here.

ASSISTANT: How may I assist you?

USER: I would like to travel from LAS to IAD, can you please check is there any flight available for me?

ASSISTANT: Sure, can you please share your planned journey dates?

USER: Thank you, I am planning to depart on 12/06 and please book my return ticket also on 12/08.

ASSISTANT: Please hold on a moment.

USER: Ok, take your time.

ASSISTANT: I found a flight for you in Frontier airlines with fare 200. Can I book your ticket?

USER: I am ok with this flight, you can proceed with booking.

ASSISTANT: Ok, your booking is confirmed with flight number 1025.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.