You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: I am Timothy Martin. I am planning to visit Seattle to meet my father, can you please help me in booking a flight ticket from Atlanta?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: I am planning to start my journey on Oct 16 and return back on Oct 18.

ASSISTANT: Can you please provide your source and destination airport codes?

USER: Sure, my travelling airport codes are from ATL to SEA.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: Yes, I need a connecting flight to reach my destination.

ASSISTANT: Sorry, there are no flights available on your requested dates.

USER: That's ok, no problem. Anyway thank you for checking.

ASSISTANT: Thank you for contacting us, have a nice day.