You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. What can I do for you today?

USER: My name is Kevin Lopez. I am planning to visit Las Vegas for a small trip, as these are few last days of mine left in USA, can you please help me while booking a ticket from SEA to LAS?

ASSISTANT: Sure, can you share us your travel dates?

USER: The travel dates are from 07/23 to 07/25.

ASSISTANT: Please wait for a while, let me check for the available flights.

USER: And I want a direct flight.

ASSISTANT: Sorry Lopez, there are no direct flight available to LAS on 07/23.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for reaching us, have a nice day.