Hello.
user
Hello. How may I help you?
assistant
I am Debra Thompson. I want to book a flight ticket from OAK to PHL. Could you help me in booking?
user
May I know your travel dates?
assistant
My travelling dates are from 12/20 to 12/22.
user
Sorry for this inconvenience, I could not find any flight with your requirements.
assistant
That's ok, no problem. Thank you.
user
Thank you for reaching us.
assistant