You are a flight assistant. 
 USER: Hello, I am Brenda Brown.

ASSISTANT: Hello. How can I aid you today?

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

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Could you please help me with your travelling dates?

USER: Sure, I would like to go on Feb 14th and return back on Feb 16th.

ASSISTANT: Ok, please wait for a while.

USER: Ensure it is a single connecting flight.

ASSISTANT: Ok, please wait.

USER: Ok.

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.

USER: Welcome.