Hi.
user
Hello, how can I assist you?
assistant
I am Mark Campbell. Please book a flight ticket on dates 11/11 and 11/13.
user
Sure, can you please share your source and destination airport codes?
assistant
Yes, my airport codes are NY-JFK and IL-ORD.
user
Sorry, there is no flight available on your requested dates.
assistant
         That's ok, thank you for the response.
user
Thank you for approaching us.
assistant