Hello.
user
Hello. How can I help you at this moment?
assistant
I want to  book a flight ticket from SFO to OAK. Could you help me in booking?
user
Sure, I am here to help you. Can you please provide your journey dates?
assistant
My travelling dates are from June 22-24.
user
Do you have any class preference?
assistant
I prefer for normal-cost airline.
user
May I know your connection limit preference?
assistant
I need 1 connecting flight.
user
Do you have any other specifications for this trip?
assistant
My depart time should be in the afternoon and I prefer for economy class.
user
May I know your good name please?
assistant
Raymond Baker here/.
user
Raymond Baker, we regret to inform you that there are no flight services are available on this route with your preferences.
assistant
That's ok, no problem. Thank you.
user
Thank you for opting us.
assistant