You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I want to attend to my university to submit my certificates in Chicago, IL - ORD on 01/02. Can you please assist me for booking?

ASSISTANT: Sure, we are glad to help you. To proceed further, we need your source details.

USER: I would like to travel from Phoenix, AZ - PHX on 12/31. You can book a ticket with the name of James Nelson. And I need a direct flight to Chicago.

ASSISTANT: Sure, Thanks for providing your information. Please hold on, I will examine and notify you the flight details.

USER: Sure.

ASSISTANT: Thanks for your patience. Sorry for your inconvenience, no flights were found based on your requirements.

USER: Ok, no problem. Thanks for your service.

ASSISTANT: Thanks for reaching us. Have a nice day.