Hi.
user
Hello, how can I help you today?
assistant
Please help me to book a flight ticket from OAK to PHL.
user
Sure, may I know your planned travel dates?
assistant
My journey dates are from Aug, 27 to Aug, 29.
user
May I know your connection limit?
assistant
I need  a direct flight to fly.
user
Is there any class preference for you?
assistant
No.
user
May I know your good name?
assistant
John Collins.
user
Sorry to say that, no flights were found with your given details.
assistant
Thank you for your information.
user
Thank you for reaching us.
assistant