Hello.
user
Hello. How may I assist you?
assistant
Patrick Phillips here. I need  to attend a business meeting at Washington, can you please help me in booking a flight ticket from OAK to IAD?
user
Sure, I will help you. Could you please share your planned journey dates?
assistant
Sure, my planned travel dates are from Jan 26 to Jan 28.
user
Do you have any specifications?
assistant
I need to depart in the evening.
user
Patrick Phillips, no flights has been found on your planned travel dates.
assistant
That's ok, no problem. Thank you for the information.
user
Thank you for reaching us.
assistant