Hi.
user
Hello, how may I help you today?
assistant
Please help me to book a flight ticket from JFK to DFW.
user
Sure, can I know your good name please?
assistant
Brandon Parker.
user
 When you are willing to travel?
assistant
My journey dates are from Nov, 12 to Nov, 14.
user
Do you need direct flight or connecting flight?
assistant
I need  a single connecting flight.
user
 Would you let us know if you have any other preferences?
assistant
I prefer to return in the evening.
user
Sorry to say that, there are no flights available on the routes of your journey.
assistant
Thank you for your information.
user
Thank you for availing us.
assistant