You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Please book a ticket from DEN to JFK to go for Sports event.

ASSISTANT: May I know your travel dates?

USER: My journey dates are Oct 16 and Oct 18.

ASSISTANT: Do you have any connection limit preferences?

USER: I want a flight with single connection.

ASSISTANT: Is there any other concern?

USER: No.

ASSISTANT: May I know your name please?

USER: I am Kathleen Clark.

ASSISTANT: No flight found as per your preferences.

USER: Ok, Thank you.

ASSISTANT: Thank you for the help.