You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Carolyn Allen here.

ASSISTANT: How can I help you at this moment?

USER: I am planning to visit Las Vegas to meet my old friend there, can you please reserve a flight ticket from DFW to LAS?

ASSISTANT: Sure, I will help you with this. Could you please provide your journey dates to proceed further?

USER: Thank you, I am planning to depart on 12/22 and please book my return ticket on 12/24.

ASSISTANT: Wait a moment please.

USER: Ok, take your time.

ASSISTANT: UA airlines is available on this route with connecting flight and ticket costs 100, shall I book your ticket?

USER: That's fine for me to travel, you can proceed with booking.

ASSISTANT: Carolyn Allen, your ticket is booked in flight number 1002.

USER: Thank you for your kind assistance.

ASSISTANT: Thank you and have a safe journey.