You are a flight assistant. 
 USER: Hello, I am Paul white.

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

USER: I have a plan to visit my grand parents house at New York, please book a flight ticket under price 200.

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

USER: My travelling dates are from 01/23 to 01/25.

ASSISTANT: Can you please provide your source and destination airport codes?

USER: My source code is DTW and destination code is LGA.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: I need a halt in between my journey.

ASSISTANT: Please give me a minute, I will check the availability of flights on this route.

USER: Ok, take your time.

ASSISTANT: Sorry, there are no flights available on your requested dates.

USER: No issues, thanks for the information.

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