You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Scott Edwards. I am planning to book a ticket to attend a meeting at AUS. Can you please help me out to book a ticket from LAS?

ASSISTANT: Sure, may I know your planned travel dates to check for the flight availability?

USER: I would like to travel on Apr 23 and return back on Apr 25.

ASSISTANT: Do you have any specifications?

USER: Yes, I am looking for a direct flight.

ASSISTANT: Sorry, there are no flights available for your desired connection limit.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for reaching us.