You are a flight assistant. 
 USER: Hello, I am Gregory Jackson.

ASSISTANT: Hello, how may I assist you today?

USER: Please help me in booking my flight ticket from ATL to SEA?

ASSISTANT: Sure, can you please share your travelling dates?

USER: My planned trip dates are Nov 15-17.

ASSISTANT: Do you have any specifications?

USER: I need a direct flight which returns in the afternoon.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for opting us.