You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you for the day?

USER: Can you please help me to find a flight in a business class to reach Chicago?

ASSISTANT: Sure, I am gleeful to help you with that. Can you please share your planned  travel dates?

USER: Thank you. I would like to travel on the dates of June 18 and June 20.

ASSISTANT: May I know your source and destination codes?

USER: The source and destination airport codes are PHL and ORD.

ASSISTANT: Can I know your connection limit?

USER: I prefer a direct flight for my journey.

ASSISTANT: Do you have any other specifications?

USER: No, I didn't have any other specifications.

ASSISTANT: May I know your name please?

USER: My name is Catherine Anderson.

ASSISTANT: Sorry Catherine Anderson , we haven't found any flights based on your specification.

USER: It's ok, not a problem with that. Thank you for your time.

ASSISTANT: Thank you for reaching us, have a great day.

USER: You are welcome.