You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you for today?

USER: I am Brian Williams, can you please check the availability of flights from New York, NY-JFK to Detroit MI-DTW?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: Sure, I am planning to go on 10/14 and return on 10/16.

ASSISTANT: Sorry, there is no flights available on your requested dates on this route.

USER: Ok, no problem. Thank you for your time.

ASSISTANT: Thank you for contacting us, have a nice day.