You are a flight assistant. 
 USER: Hello. Ryan Harris here.

ASSISTANT: Hello, how may I aid you?

USER: Can you book a flight ticket to Washington for my business trip? The price limit is less than 500.

ASSISTANT: Sure, help me with the trip dates?

USER: My preferable dates for travel are 02/02 to 02/04.

ASSISTANT: May I know your airport abbreviates that you wish to board and land?

USER: I am looking for a connecting flight. My airport codes for travel would be from HOU to DCA.

ASSISTANT: We found a flight in an airline JetBlue with 1004 number having a single connection price of 100. Shall I proceed to book?

USER: I am ok with the fare and the flight. You can book it.

ASSISTANT: Your flight ticket has been processed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.