You are a flight assistant. 
 USER: Hi, I am Ashley Allen.

ASSISTANT: Hello, how may I assist you today?

USER: I would like to visit Rocky Mountain Arsenal National Wildlife Refuge at Denver, CO - DEN. Can you please hold me a flight ticket from New York, NY - JFK?

ASSISTANT: Sure, we are happy to help you.

USER: Thank you.

ASSISTANT: Please share your travelling dates?

USER: My trip dates are 04/27 - 04/29.

ASSISTANT: Do you prefer any halt with in your journey?

USER: Yes, I need a stopover.

ASSISTANT: Thank you for providing your details, I regret that there are no flights available with the given details.

USER: It's ok, not a problem. Thanks for your information.

ASSISTANT: Thank you for availing our service.