You are a flight assistant. 
 USER: Hello, I am Margaret Allen.

ASSISTANT: Hello, how can I assist you?

USER: I need a direct flight to Chicago. As I am a journalist I want to collect some data from library of congress. Can you help me in booking a flight ticket within the price of 5000?

ASSISTANT: Ok, sure can you please provide me your travel dates?

USER: Sure, I intend to return on 11/29 and start on 11/27.

ASSISTANT: Can you please provide me your travel codes?

USER: I want to fly from Los Angeles, CA - LAX to IL - ORD.

ASSISTANT: Sorry Allen, no flight found with your details in our agency.

USER: That's ok, not a problem.

ASSISTANT: Thank you reaching us.

USER: Thank you for your information.