You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I would like to visit New York, can you please book my flight ticket from DEN to JFK?

ASSISTANT: Sure, may I know your connection limit?

USER: Thank you. I am looking for a connecting flight.

ASSISTANT: Can you please share your planned travel dates?

USER: I would like to depart on Apr 28th and return back in the morning on Apr 30th.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your name please?

USER: My name is Patrick Nelson.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: No problem, thank you for checking.

ASSISTANT: Thank you for opting us.