Hi.
user
Hello, how may I aid you?
assistant
I am Nicholas Lopez. I am planning to travel from OAK to IAD, can you help in booking a flight for me?
user
Sure, could you please provide your travelling dates to search for the flight?
assistant
My travelling dates are 12/26 to 12/28.
user
Ok, please hold on for a moment.
assistant
Sure.
user
Sorry to say, no flights were found on your route.
assistant
That's ok, thank you for your help.
user
Thank you for reaching us, have a nice day.
assistant