Hello.
user
Hello, what services are you seeking from us?
assistant
Can you please help me to book a flight from IAD to ORD?
user
Sure, please share me your trip dates.
assistant
My travel dates are Mar 28 to 30.
user
Do you need direct flight or connecting flight?
assistant
I prefer a connecting flight.
user
For booking, we need your good name. Please mention it.
assistant
I am Anthony Garcia.
user
 Would you let us know if you have any other preferences?
assistant
My depart time should be evening.
user
Sorry to say that, there are no flights available on the routes of your journey.
assistant
No problem, thank you for the information.
user
Thank you for availing us.
assistant