You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I want to travel from Dallas & Fort Worth, TX - DFW on 06/25 to attend my grand parents wedding anniversary. Can you book a flight ticket to Las Vegas, NV - LAS?

ASSISTANT: May I know your return day?

USER: I will return on 06/27.

ASSISTANT: OK, may I know your name please?

USER: I am Jonathan Jackson.

ASSISTANT: OK, please wait for a moment, I will check and back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, I found a flight with your given details. The flight number is: 1014, airline: Southwest, price: 200.

USER: OK, proceed for booking with this airline.

ASSISTANT: OK, your flight ticket has been confirmed.

USER: OK, thank you for your service.

ASSISTANT: Thanks for choosing us.