You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today from my end?

USER: Stephen Martin. Can you please make a reservation from JFK to DTW?

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates to check the flight availability.

USER: Sure, my travelling dates are Dec 10 - Dec 12.

ASSISTANT: Do you have any flight specifications to be met?

USER: Yes, I need a connecting flight.

ASSISTANT: Sorry Stephen Martin, there is no flight in your route with your travel dates.

USER: Ok, no problem. Thank you for checking.

ASSISTANT: Thank you for reaching us.