You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Nicholas Edwards here.

ASSISTANT: How may I help you out?

USER: Can you book a connecting flight to Los Angeles?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My preferable dates for travel are 10/11 to 10/13. I need a connecting flight. My airport codes for boarding the flight are DCA to LAX.

ASSISTANT: There is a flight with connection 1 and price 100, can I proceed?

USER: Sure, I am happy with the fare. You can book the flight ticket. Thank you.

ASSISTANT: OK, your ticket has been booked with flight number 1010.

USER: Thank you.

ASSISTANT: Thank you for reaching us.