You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, welcome to flight booking agency.

USER: I am Jacob Barker.

ASSISTANT: How can I assist you today?

USER: I need to book a flight ticket a halt in between my journey, Can you please help me that?

ASSISTANT: Sure, can you please share your preferable travel dates?

USER: I would like to travel on 10/16 to arrival on 10/18.

ASSISTANT: Could you please provide the airport codes?

USER:  Leaving point is NY-LGA to landing point is MI-DTW.

ASSISTANT: Ok, let me check for the availability of flight on this route.

USER: Sure.

ASSISTANT: Jacob, I am sorry to inform you that there is no flight available at your requested dates.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: You are welcome. Thank you for contacting us.