You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: Can you please help me in booking a ticket from SEA to LAS? As I need to attend a wedding.

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: Sure, my journey dates are 05/12 and 05/14.

ASSISTANT: May I know your name?

USER: Yes, my name is Ryan Miller.

ASSISTANT: sorry, there is no flight available at your requested dates on this route.

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

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