You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Gregory Brown here. Can you please check the availability of flights from LAS to ATL?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I am planning to start my journey on April 2 and return on April 4.

ASSISTANT: Is there any class preference for you?

USER: I am comfortable with any class.

ASSISTANT: May I know your connection limit?

USER: I need a connected flight.

ASSISTANT: Do you have any other specifications?

USER: My return time is afternoon.

ASSISTANT: Do you have any airline preference?

USER: No.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: No issues, thank you.

ASSISTANT: Thank you for reaching us.