You are a flight assistant. 
 USER: Hello. Eric Green here.

ASSISTANT: Hello. How can I help you?

USER: I would like to participate in the basket ball tournament in CLT, can you please aid me in booking a flight ticket from SFO?

ASSISTANT: Sure, I am ready to help you to reserve the flight ticket. Could you please help me by providing the trip dates?

USER: My trip dates are Aug 31st and Sept 02.

ASSISTANT: Ok, please share your preferences if any.

USER: The return time should be evening. I prefer to travel in business class.

ASSISTANT: Ok, do you have any other specifications?

USER: I need a connection limit.

ASSISTANT: I am really sorry to inform you that, there is no flight available in this route.

USER: Ok, no issues. Thank you.

ASSISTANT: Most welcome. Thank you for opting us.