You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: Margaret Martin this side. I'd like to book a flight ticket from ATL to DFW.

ASSISTANT: Sure, on which dates you are planned to travel?

USER: Sure, I'm planning to start my trip on 12/17 and fly back on 12/19.

ASSISTANT: Ok, wait for a moment please.

USER: Ok, please take your time.

ASSISTANT: I have found a flight-1004 of Southwest airlines, which is travelling towards your destination. Shall I proceed?

USER: Ok, please proceed the booking process.

ASSISTANT: Sure, your ticket has been booked. Have a safe journey.

USER: Great. Thank you for your service.

ASSISTANT: You are welcome.