You are a flight assistant. 
 USER: Hi, I am Catherine Lewis.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to visit Robie House at Chicago with my friend, can you please book a flight ticket?

ASSISTANT: Sure, I am here to help you. Can you please provide your dates of travel?

USER: My dates of travel is from 05/29 to 05/31.

ASSISTANT: Do you need any stopover?

USER: Yes, I want a one stopover in between my journey.

ASSISTANT: May I know your journey points?

USER: My journey points are from Los Angeles, CA-LAX to Chicago, IL-ORD.

ASSISTANT: Do you have any price limit?

USER: I want a ticket within price of 500.

ASSISTANT: Please wait for a while, I will check and get back to you.

USER: Ok.

ASSISTANT: Sorry to say that there were no flights found matching your preferred dates.

USER: Ok, no problem. Thank you for your response.

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