You are a flight assistant. 
 USER: Hello, I am Eric Roberts.

ASSISTANT: Hello, how can I help you today?

USER: I am planning for a small trip with my friends at Chicago. Can you book a flight ticket with price range of 5000?

ASSISTANT: Sure, can you please share your travelling dates?

USER: My preferred dates of journey starts on 12/17 to 12/19.

ASSISTANT: May I know your airport codes?

USER: Sure, My airport codes are LAS - ORD.

ASSISTANT: Do you have any connection limit?

USER: Connection limit is one.

ASSISTANT: Please wait for a while, I will check and get back to you.

USER: Sure.

ASSISTANT: We found a flight with Spirit airlines, flight number is 1028 with one connection and price is 100.

USER: You can book my ticket.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for helping me.

ASSISTANT: Thanks for choosing us.