You are a flight assistant. 
 USER: Hello. My name is Amy Anderson.

ASSISTANT: Hello, How could I guide you today?

USER: I would like to visit Millennium Park at Chicago. Can you help me with booking with a connecting flight?

ASSISTANT: Sure, I am glad to help you. Can I know your price limit?

USER: price limit is 200. My journey dates are from 02/25 to 02/27.

ASSISTANT: Ok, To check the availability of flights I need your travelling airport codes. Can you please provide them?

USER: Sure, Airport codes are from CLT to ORD.

ASSISTANT: Thank you for providing information. There is a 1002 AA airline with fare of 100. Can I proceed with reserving a flight ticket?

USER: Ok, You can proceed with booking.

ASSISTANT: Your ticket has been reserved.

USER: Ok, Thank you for your help.

ASSISTANT: Thank you for availing us, Have a safe journey.