You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: As I am a scientist, I want to attend science festival with my students at Chicago. Can you do the reservation?

ASSISTANT: Sure, can you please help me with your journey dates?

USER: Dates are 06/18 and 06/20.

ASSISTANT: May I know your airport codes please?

USER: My airport codes are DCA-ORD.

ASSISTANT: Do you have any specifications?

USER: Price should not cross 5000. I need halt in my journey.

ASSISTANT: Please wait for a while.

USER: Sure, Make it fast.

ASSISTANT: We found a flight with Spirit airlines, flight number is 1007 with one connection and price is 100.

USER: Please do the booking.

ASSISTANT: For further proceeding may I know your good name please?

USER: Karen Hall here.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you so much.

ASSISTANT: Thanks for choosing us.