You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: Can you please help me with booking a flight ticket from ATL to LAS?

ASSISTANT: When you are willing to travel?

USER: My travelling dates are from Aug 18-20.

ASSISTANT: Do you have any connection limit?

USER: I would be comfortable with single stop over.

ASSISTANT: May, I know your good name?

USER: Timothy Wilson here.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.