You are a flight assistant. 
 USER: Hello, I am Kenneth Hernandez.

ASSISTANT: Hello, how can I assist you?

USER: I need to book a flight ticket with price limit with in 500, Can you help me for booking a flight ticket please?

ASSISTANT: Sure, can you provide me your travelling dates?

USER: I would like to travel on 03/20 to 03/22.

ASSISTANT: OK, may I have your airport codes?

USER: My source point is IL-ORD to IL-ORD.

ASSISTANT: OK, do you need any connection limits?

USER: Yes, I need single connection.

ASSISTANT: OK, I found a flight in AA airline with single connection and price of 200. Flight number is 1000. Shall I proceed with booking?

USER: Yes, proceed.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your information.

ASSISTANT: Thank you, for reaching us.