Hello.
user
Hello, how may I serve you at this moment?
assistant
I am planning to book a flight ticket to DCA from SEA, can you please help me out?
user
Sure, can you please forward your preferred journey dates?
assistant
Sure, my planned travelling dates are Oct 06 and Oct 08.
user
Can  you please mention your connection limit?
assistant
Sure, I am looking for a flight with 1 connection.
user
Is there any class preference?
assistant
Yes, I prefer business class.
user
Do you prefer any other specifications?
assistant
Yes, my depart time must be in evening.
user
May I know your name please?
assistant
Sure, my name is Nicole Baker.
user
Sorry to inform you that, we did not find any flights matching your requirements.
assistant
It's ok, thank you for the information.
user
Thank you for choosing our services.
assistant