Hello, I am John Allen.
user
Hello, How can I help you?
assistant
I need to book a flight ticket from DCA to JFK, Can you please help me for booking?
user
Sure, Please help me with your travel dates.
assistant
I would like to travel on 04/18 to 04/20.
user
Sorry, No flights found with your chosen dates. Thank you for opting us.
assistant
Ok, no problem. Thanks for choosing us.
user