You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you today? May I know your name?

USER: I am John Martinez, Planning to attend the visitation or the viewing event of my friend to be held at Atlanta, GA - ATL. Can you please help me in booking the ticket?

ASSISTANT: Sure, can you please provide me your origin airport codes with journey dates.

USER: My origin is from Seattle, WA - SEA on Aug/11 and returning on Aug/13.

ASSISTANT: Thank you for providing details, please wait for a while, I will check the availability of the flights and get back to you.

USER: OK, please make sure that it is a direct flight.

ASSISTANT: Sure. We are sorry to inform you that, there is no direct flight found in your given requirements.

USER: Ok, Thank you for your service.

ASSISTANT: Thank you for connecting with us. Have a nice day.