Hi, I am Carolyn Perez.
user
Hello, How can I aid you?
assistant
I want to book a flight ticket on 09/21 and return on 09/23. Can you please book me a direct flight?
user
Sure, I can help you. Can  I know your journey airport codes?
assistant
Yes, my airport codes are New York, NY-LGA and San Francisco, CA-SFO.
user
Please wait a while.
assistant
Ok.
user
Thanks for your time. Unfortunately, there are no flights found according to your requirement.
assistant
That's ok, thank you for the information.
user
Thank you for consulting us.
assistant