You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am Patrick Hill from Detroit.

ASSISTANT: Welcome to our flight booking agency.

USER: Thank you, I have to reserve a flight  ticket to reach New York city because I have an important meeting with my business clients. Can you please find a flight ticket for me?

ASSISTANT: Patrick Hill, can you please share your travelling dates for the following journey?

USER: Sure, my planned travelling dates are 08/26 and 08/28.

ASSISTANT: May I know your desired airport codes for your journey?

USER: The airport which is near to my current location is DTW and the destination airport code is LGA.

ASSISTANT: Ok, please allow me for a moment to check for the flights availability for you.

USER: Sure, take your own time and provide me a flight with the ticket fare is up to 200 or less.

ASSISTANT: Sorry for the inconvenience but there are no flights available on your requested route.

USER: It's ok, not a problem with that one. I will reach some other flight ticket booking agency to reserve my ticket. Anyways thank you for searching the flights.

ASSISTANT: Thank you for approaching our agency for your help.

USER: You are most welcome.

ASSISTANT: Have a great day.