You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am planning to visit Central Park at New York, could you please help me with booking a flight ticket from DEN to LGA?

ASSISTANT: Can I know your planned dates of journey?

USER: I would like to depart on July 12th and return on July 14th.

ASSISTANT: May I know your name and preferences?

USER: I am Brandon Harris. I am looking for a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: Make sure that my return time must be afternoon.

ASSISTANT: Is there anything else I want to check?

USER: No.

ASSISTANT: Please allow me a moment.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting. Sorry as per your intents there are no flights available in this route.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for choosing us.