You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I am Gregory Hill. I need a flight ticket for me to meet my sister, so can you please book a ticket to PHL from DCA?

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

USER: Thank you. I have planned my trip dates on 12/26 and back on 12/28.

ASSISTANT: Ok, please hold on for a while. There is a flight with connection 1 and price 200 with flight number 1012, can I proceed with this flight?

USER: Yes, please proceed with ticket booking.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.