You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you for the day?

USER: I am planning to go for a trip to LGA, can you please help me to book a flight ticket in business class from SEA?

ASSISTANT: Sure, I will help you with this. Could you please provide your journey dates?

USER: My journey dates are May 25h and May 27th.

ASSISTANT: May I know your good name to proceed further?

USER: Sure, my name is Stephen Gonzalez.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: Stephen Gonzalez, there are no flight services available with your requirement on this route.

USER: No problem, thank you for your time.

ASSISTANT: Thank you for contacting us.