Hello. I am Donald Brown.
user
Hello, how can I help you?
assistant
Help me to book a direct flight to see my parents at Charlotte.
user
Ok, please provide me your airport codes.
assistant
I will fly from CA-OAK to NC-CLT.
user
May I know your planned journey dates?
assistant
I will travel on 09/26 and return on 09/28.
user
Ok, please wait for a moment.
assistant
Sure.
user
Sorry, there are no flights found with your given details.
assistant
Ok, thank you for the information.
user
Thank you for choosing us.
assistant