You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Please help me out in booking the ticket from JFK to DEN.

ASSISTANT: Sure, I am here to help you out. May I know you travelling dates please?

USER: My trip dates will be Nov 26 to Nov 28.

ASSISTANT: Can you please share your connection limit?

USER: I need a connecting flight.

ASSISTANT: May I know your name please?

USER: Katherine King is my name.

ASSISTANT: Do you have any other specifications?

USER: My return time must be in the evening.

ASSISTANT: Katherine King, there are no flights available in your route.

USER: That's ok, thank you.

ASSISTANT: Thank you for choosing us.