You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Stephanie Carter.

ASSISTANT: How may I help you out?

USER: I am planning to visit Millennium Park at Chicago, could you please help me with booking a flight ticket from DCA to ORD?

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

USER: I would like to take off on 09/09 and return on 09/11.

ASSISTANT: There is a flight with connection 1 and price 200, can I proceed?

USER: Yes, please confirm the booking.

ASSISTANT: Ok, your ticket has been booked with flight number 1023.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thank you for choosing us.