Hi. I am Donald Hill.
user
Hello, how may I be there for you?
assistant
I am planning for a round trip in Oakland, so can you please book me a direct flight?
user
Sure, may I know your airport code?
assistant
 Yes, my airport code is CA-OAK.
user
When are you planning to travel?
assistant
I am planning to travel on 10/02 and return on 10/04.
user
Ok, please wait.
assistant
Ok.
user
Thanks for waiting, There are no flights at this moment on your required dates.
assistant
That's ok. Thank you for the response.
user
Thank you for picking us.
assistant