You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: Help me in booking a flight from JFK to DCA?

ASSISTANT: Sure, We are here to help you. Can I know your travelling dates?

USER: My travelling dates are Apr 21 to 23.

ASSISTANT: Do you need any break?

USER: I prefer single connection flight.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: May I know your name?

USER: I am Barbara Carter.

ASSISTANT: We found a connecting flight with an UA airlines, flight number:1009.

USER: Proceed for booking.

ASSISTANT: Your ticket has been confirmed with flight number 1009.

USER: Thank you.

ASSISTANT: Thank you for reaching us.