You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I'm Michelle Taylor. I am planning to attend business meeting at San Francisco, can you please help me with booking a flight ticket?

ASSISTANT: Sure Michelle, please provide me your journey dates.

USER: Sure, I would like to take off on 06/27 and return back on 06/29.

ASSISTANT: May I know the airport codes please?

USER: My source airport code is LAX and the destination airport code is SFO.

ASSISTANT: Michelle, I found a flight with Southwest airlines available with price 100. Shall I book the ticket?

USER: Yes, please proceed with the booking.

ASSISTANT: Your ticket is confirmed and the flight number is 1000.

USER: I appreciate your help, thank you.

ASSISTANT: Thank you for choosing us.