You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you please check the availability of flights in between the points from ATL to LAS?

ASSISTANT: Let me know the travel dates please.

USER: My trip dates are Sept 24 and 26.

ASSISTANT: Is there any class preference?

USER: I prefer to travel in economy class.

ASSISTANT: May I know the connection limit?

USER: I need a connected flight.

ASSISTANT: Are there any more preferences?

USER: My depart time is morning.

ASSISTANT: May I know the name please?

USER: Sure, my name is Rebecca Williams.

ASSISTANT: Sorry to inform that there are no flights on your route with the given dates.

USER: That's Ok, thanks for your assistance.

ASSISTANT: Thank you for reaching us.