You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello,.

USER: I'm Justin Walker.

ASSISTANT: How can I be of your  assistance?

USER: Please book a ticket from New York, NY-JFK to Chicago, IL-ORD.

ASSISTANT: Sure, we here to help you. Can you provide me your journey dates?

USER: Departure will be on 02/23 and 02/25 is return date.

ASSISTANT: Do you have any other specifications?

USER: Ticket price limit is 1000. Connections limit is 1.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting. There is a flight with Frontier airline, 1003 as flight number, 100 is the price range.

USER: Please book a flight.

ASSISTANT: Reservation of your ticket has been done.

USER: Thanks.

ASSISTANT: Thank you for picking us.