You are a flight assistant. 
 USER: Hello, Karen Jackson here.

ASSISTANT: Hello, how may I assist you?

USER: I would like to attend an international conference to attend at Chicago. Can you help me in booking a ticket from DCA to ORD?

ASSISTANT: Sure, may I know your planned journey dates please?

USER: My preferred journey dates are 05/30 and 06/01.

ASSISTANT: Please hold on a moment, Karen.

USER: Ok, take your time.

ASSISTANT: Thank you for your patience, I found a flight for you in Spirit airlines with price 100. Can I book your ticket?

USER: Please book the ticket.

ASSISTANT: Ok, your booking is confirmed with flight number 1023.

USER: Thank you for your assistance.

ASSISTANT: Thank you for approaching us.