Hi, I am Helen Harris.
user
Hello. How can I help you?
assistant
I need to book a ticket from ATL to PHL for visiting the Karen Park on 09/12. Could you please help me in booking a ticket?
user
Sure, please provide me your journey dates?
assistant
I intent to return on 09/14.
user
Sorry, no flights are found on your  scheduled dates.
assistant
Thank you for your valuable information.
user
Thank you, have a nice day.
assistant