Hello.
user
Hello, how may I aid you?
assistant
 I am Debra Garcia want to travel from PA-PHL to TX-DFW to attend a press conference. Can you book a direct flight?
user
Sure, we are here to assist you. May I know your travel dates?
assistant
My travel dates are 08/25 and 08/27.
user
Sorry to inform you that, no flights are available on your requirement.
assistant
Ok, no issues. Thank you for your response.
user
Thanks you for availing us.
assistant