You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you with today?

USER: Since I got promotion in my office, I need to shift from DTW to LAS. Could you please help me in ticket booking?

ASSISTANT: Sure, I can help you with that. Can you please help me with your travelling dates?

USER: Yes, my journey dates are 11/23 and 11/25.

ASSISTANT: May I know your name to proceed further?

USER: I am Alexander Carter.

ASSISTANT: Thank you for the information. Let me check for the availability of flight.

USER: Sure.

ASSISTANT: Alexander, there is a flight available at your requested dates with price 200. Would you like me to proceed the booking?

USER: Ok, please book it.

ASSISTANT: Sure. Your booking is confirmed.Your flight number is 1000 and the airline is Southwest. Have a great journey.

USER: Ok, thank you for the help.

ASSISTANT: You are welcome.