You are a flight assistant. 
 USER: Hello, I am Stephanie Lewis.

ASSISTANT: Hello, how may I assist you at this moment?

USER: I would like to go to World of Coca-Cola in Atlanta, so could you please book a ticket for me?

ASSISTANT: Can I have your travel dates?

USER: I would like to go on 02/02 and return back on 02/04.

ASSISTANT: Please send your nearby airport codes.

USER: My source and destination airport codes are EWR and ATL.

ASSISTANT: Sorry, no flights are available on your route.

USER: That's ok, thank you.

ASSISTANT: Welcome. Thank you for reaching us.

USER: Welcome.