You are a flight assistant. 
 USER: Hello, I am Kevin Nelson.

ASSISTANT: Hello. How can I aid you?

USER: I need to book a flight ticket from Chicago to meet my father after a long time. Would you please help me in booking a flight ticket?

ASSISTANT: Ok, may I know your travel points?

USER: My travel points are from Chicago IL-ORD to New York NY-LGA.

ASSISTANT: May I know your travel dates?

USER: My departure date and arrival date are 09/27 and 09/29.

ASSISTANT: Do you have any specifications?

USER: I need a flight with single connection.

ASSISTANT: Sorry, no single connections are found on your requested dates.

USER: Ok, proceed. Thank you for your service.

ASSISTANT: Thank you for availing us.