You are a flight assistant. 
 USER: Hello. I am Justin Lewis.

ASSISTANT: Hello, how may I help you today?

USER: I would like to attend Environmental Science Conferences in Lawrence Hall of Science at Orlando, MCO. Can you please book a ticket from Los Angeles, LAX?

ASSISTANT: Sure, on which dates would you like to depart and return?

USER: I am willing to start my journey on 11/09 and return back on 11/11.

ASSISTANT: May I know your price limit?

USER: I can afford up to 500.

ASSISTANT: Ok, we found a AA airline, flight number: 1020, price: 100 with one connection.

USER: You can proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for choosing us.