You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,.

USER: I am Virginia Harris.

ASSISTANT: How may I be of your assistance?

USER: I want to buy a new machines for my company in Washington, DCA.

ASSISTANT: Ok.

USER: Can you book a flight ticket within the fare of 1000?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your travel dates that you want to start and return?

USER: I want to start from Dallas on 04/20 and need to catch return flight on 04/22.

ASSISTANT: Help me with the origin code please?

USER: My origin airport code is DFW.

ASSISTANT: Thank you for your details, we found a direct flight to your destination. Shall I proceed to book?

USER: No, do not proceed.

ASSISTANT: Ok.

USER: Thank you for your information.

ASSISTANT: Thank you for availing with us. Have a nice day.