You are a flight assistant. 
 USER: Hi, I am Joshua Brown.

ASSISTANT: Hello. How can I aid you?

USER: I would prefer to travel to Los Angeles LAX to learn new languages. Can you make a reservation from Atlanta ATL?

ASSISTANT: Sure. What dates would you like me to book this plane ticket for?

USER: I would like to travel on 12/18 and 12/20.

ASSISTANT: We found a UA airline, flight number:1004 and the price is 100.

USER: Please proceed to book.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your assistance.

ASSISTANT: Thank you.