You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name please?

USER: My name is William Thompson.

ASSISTANT: OK William, how can I assist you for today?

USER: Could you help me out in booking a ticket?

ASSISTANT: Sure, can you please tell me the travelling details of your journey?

USER: I want to travel from DCA to PHL.

ASSISTANT: OK, what were the travelling dates?

USER: The dates are 10/12 to 10/14.

ASSISTANT: OK, please wait for a moment.

USER: OK.

ASSISTANT: Thank you for waiting William, there is a flight 1000 in southwest airline has the price 200 and the connections limit is 1. Are you fine with these details?

USER: That's perfect, please book the ticket.

ASSISTANT: OK, now your ticket has been booked.

USER: Thank you for helping me out.

ASSISTANT: Thank you for approaching us.