You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please book a ticket from ORD to MSP to go for long trips?

ASSISTANT: Sure, please share your journey dates?

USER: My journey dates are Dec 12 and Dec 14.

ASSISTANT: Do you have any connection limit?

USER: Yes, I want single connected flight.

ASSISTANT: Any other requirements to be met?

USER: I prefer business class.

ASSISTANT: May I know your name?

USER: Sure, I am Joseph Jackson.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok, Thank you for your service.

ASSISTANT: Thank you for reaching us.