You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How may I assist you?

USER: I would like to book a flight ticket to attend Conference about Social Issues in Los Angeles, CA - LAX. Can you book a flight ticket with price of 1000?

ASSISTANT: Sure, may I know your travel dates?

USER: My scheduled dates are 12/03 - 12/05.

ASSISTANT: May I know your origin airport code?

USER: My departure airport code is from New York, NY - EWR.

ASSISTANT: May I know your name?

USER: I am Kevin Evans.

ASSISTANT: There is no flight on your details.

USER: Thank you.

ASSISTANT: Thank you.