You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I help you at this moment?

USER: I am Paul Wilson. Can you please book a flight ticket from EWR to JFK to  attend a event in New York?

ASSISTANT: Sure, I am here to help you. Could you please provide your journey dates?

USER: My journey start on Sep 21st and need to return back on Sep 23rd. And my depart time should be in afternoon.

ASSISTANT: Do you have any connection limit for this trip?

USER: Yes, I need 1 connection in between journey.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: Paul Wilson, there are no flight services available with your preferences on this route.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for contacting us.