You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. May I know your good name, Please?

USER: I am Brian Hill.

ASSISTANT: How may I assist you for the day?

USER: I want a flight with price limit 500. I want to visit National Museum of Natural History. So can you book a flight ?

ASSISTANT: Sure, We can help you on that. May I know your airport codes, Please?

USER: My airport codes are from LAX to DCA.

ASSISTANT: May I know your travel dates, Please?

USER: My preferable dates are from 09/29 to 10/01. My journey should contain a connection.

ASSISTANT: OK, Thank you for providing valuable information.

USER: Ok.

ASSISTANT: We are very happy to inform you that, We found a flight with airline:JetBlue having flight number:1014 matching all your requirements. Shall I proceed to book a ticket?

USER: Yes, proceed booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thank you, For booking a ticket with us. Have a safe journey.