You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Melissa Thompson.

ASSISTANT: How can I assist you?

USER: I need the ticket with in price limit 500.

ASSISTANT: May I know the connection limit?

USER: I need one connection.

ASSISTANT: Please let me know your airport codes.

USER: I would like to start from CA-LAX to DC-DCA.

ASSISTANT: Can you send me the travelling dates?

USER: I will start on 01/01 and return on 01/03.

ASSISTANT: Please wait a while.

USER: Ok.

ASSISTANT: Thanks for being waiting. We found a AA airline,flight number:1004 and the price is 100.

USER: That's perfect, you can proceed.

ASSISTANT: Your ticket has been confirmed. Thank you for consulting us.

USER: Thanks for your response.