You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me in booking a flight ticket from DCA to LAS?

ASSISTANT: Sure, may I know your travelling dates?

USER: I want to fly on May 23 and return on May 25.

ASSISTANT: Let me know your connection limit.

USER: I need a single connection.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your name please?

USER: Myself George Turner.

ASSISTANT: We found a Delta airline, flight number: 1012, price: 200, it is a direct flight.

USER: You can proceed to booking.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.