You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I would like to meet my boss at Las Vegas, could you please help me to book my flight ticket from ATL to LAS?

ASSISTANT: Sure, may I know your travel dates?

USER: Yes, I will depart on Apr 13th and return back on Apr 15th.

ASSISTANT: Do you have any specifications?

USER: I need direct flight.

ASSISTANT: May I know your name?

USER: My name is Pamela Brown.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your route.

USER: Sad to hear that. Anyway, thank you for the information.

ASSISTANT: Thank you for reaching us.