You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I need a business class ticket to EWR from OAK to attend an event. Can you please assist me in booking my flight ticket?

ASSISTANT: Sure, can you please share your travel dates?

USER: Ok, my travel dates are Jan 25 and Jan 27.

ASSISTANT: Do you have any class preference?

USER: I have already provided you about that.

ASSISTANT: May I know your connection limit?

USER: I need a single connecting flight.

ASSISTANT: Do you have any other requirement that you are looking for?

USER: No.

ASSISTANT: May I know your name to proceed further?

USER: Ok, my name is Sharon Lopez.

ASSISTANT: Sharon Lopez, I am sorry to inform you that there is no flight available at your request.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thank you for contacting us.