Hello.
user
Hello, how may I assist you?
assistant
My name is Alexander Johnson, I want to book a flight from DCA to BOS. Can you help me?
user
Sure, may I know your planned travel dates please?
assistant
I will fly on Feb 1st and return on Feb 3rd.
user
Do you have any particular time for departing and returning?
assistant
I need a depart flight in evening.
user
Would you like to prefer direct flight or connecting flight?
assistant
I need a connecting flight.
user
Do you have any other specifications?
assistant
No.
user
Sorry, there is no flight available on your requested dates.
assistant
Ok, thank you for the information.
user
You are welcome.
assistant