You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How best can I assist you now?

USER: Can you please reserve me a flight ticket from DTW to LGA?

ASSISTANT: Sure, I am here to help you in reserving your flight. Please, share me your journey dates.

USER: Sure, my planned travel dates are from Dec 18 to Dec 20.

ASSISTANT: Do you have any connection limit for your flight?

USER: I am looking for a direct flight.

ASSISTANT: May I know your other specifications, if any?

USER: No, I don't have any other requirements.

ASSISTANT: Let me know your good name to proceed further for documentation purpose.

USER: Myself Matthew White.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, we are unable to provide flight in between your journey routes, due to some technical up-gradation at destination airport.

USER: That's ok, no issues. Thank you for the information.

ASSISTANT: Thank you for reaching us, have a good day.