You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: My name is Dorothy Clark. I would like to travel from Charlotte to Chicago. Can you please help me with booking a flight ticket?

ASSISTANT: Dorothy can you please provide the airport codes? Yes, I can help you in booking a flight ticket.

USER: Sure, it is from NC- CLT to IL - ORD.

ASSISTANT: May I know your preferable dates for travelling?

USER: Sure, my departure date is on 10/21 and the return date is on 10/23.

ASSISTANT: Do you have any price limit? OK.

USER: Yes, the price limit should not exceed 1000 and the connection limit should be only 1.

ASSISTANT: I found a flight with Frontier airline which satisfies all your requirements. The price is 100.

USER: That's perfect. Can you please confirm the booking?

ASSISTANT: Yes, wait for a while.

USER: Sure.

ASSISTANT: Your ticket is booked.

USER: Thank you for booking a flight ticket.

ASSISTANT: Have a safe journey ahead.

USER: Thank you. Have a great day.