You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: My name is Sharon Carter and I want to book the flight ticket from DTW to EWR.

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

USER: My preferable travel dates are 05/11 and 05/13.

ASSISTANT: May I know your connection limit?

USER: I need a single connection.

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

USER: I prefer to travel in business class and I want to return in the afternoon.

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

USER: Ok, thank you for the information.

ASSISTANT: Thank you for contacting us.