Hi.
user
Hello, how may I help you today?
assistant
Can you please help me in booking my ticket from DFW to IAD?
user
Sure, can I know your good name please?
assistant
Sure, my name is Justin Collins.
user
 When you are willing to travel?
assistant
Sure, my willing to travel dates are from Jan, 16 to Jan, 18.
user
Do you need direct flight or connecting flight?
assistant
Yes, I need a connecting flight.
user
 Is there any other specifications?
assistant
Yes, I want to depart at evening time.
user
Sorry to say that, there are no flights available on the routes of your journey.
assistant
Ok, no problem. Anyways, thank you for your service.
user
Thank you for opting us.
assistant