You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: John Clark here.

ASSISTANT: How can I assist you at this moment?

USER: Can you please help me out in booking the ticket from IAD to IAD? As I'm planning to have a round trip here.

ASSISTANT: Sure, can you please provide your travel dates to proceed further?

USER: Sure, my travel dates are 03/03 and 03/05.

ASSISTANT: Wait a moment please.

USER: Sure, I'll wait.

ASSISTANT: Southwest airlines is available on this route with a ticket fare of 100, shall I book your ticket?

USER: Yes, you can proceed for booking.

ASSISTANT: John Clark, your ticket is booked with flight number 1012.

USER: Thank you for booking.

ASSISTANT: Thank you, have a safe journey.