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

ASSISTANT: Hello Lewis. How can I aid you today?

USER: Can you aid me in booking a flight ticket from ATL to LAX?

ASSISTANT: Sure, I am here to help you. Could you please share your travelling dates?

USER: Sure, I would like to go on 01/21 and return back on 01/23.

ASSISTANT: May I know your lay by's?

USER: Yes, I need one halt.

ASSISTANT: Ok, please wait for a while.

USER: Ok, take your time.

ASSISTANT: Sorry, no flights found on your requested travelling dates.

USER: That's ok, thank you for checking.

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