You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Lisa Williams. I need to book a flight ticket with price limit less than 1000, Can you help me for booking a flight ticket please?

ASSISTANT: Sure, could you help me with your airport codes?

USER: My source point is NC-CLT to destination point is IL-ORD.

ASSISTANT: Ok, let me know your travelling dates?

USER: I would like to travel on 08/09 to arrival on 08/11.

ASSISTANT: ok, any connection limit?

USER: I need single connection.

ASSISTANT: Flight- 1004, airline- Southwest, price- 100, connection-1 matches with your requested details. Shall I proceed?

USER: Yes, proceed.

ASSISTANT: Ok, your ticket has been reserved.

USER: Thanks for your information.

ASSISTANT: Thank you for reaching us.