Hello.
user
Hello, how can I serve you today?
assistant
I am Frank Davis. I am planning to attend my nephew birthday in Washington, so please help me in booking a flight ticket.
user
Sure, please share your corresponding airport codes?
assistant
My airport codes are NY - LGA, DC - DCA.
user
Ok, help me with your connection limit?
assistant
I need a direct flight.
user
Ok, when would you like me to book  a flight ticket?
assistant
I want to fly on 01/03 and return on 01/05.
user
Sorry, we did not found direct flight on your requested dates.
assistant
Not an issue.
user
Thank you for choosing us.
assistant
Thank you.
user