You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you at this moment?

USER: I want to attend my friend birthday party. Can you book a ticket from SEA to EWR?

ASSISTANT: Sure, I am here to help you. Can you please provide your journey dates?

USER: Sure, my dates are 11/25 and 11/27.

ASSISTANT: Do you have any connection limit preference?

USER: Yes I want halt in between my journey with in normal cost. I need business class only.

ASSISTANT: May I know your good name please?

USER: Sure, Samantha Wright here.

ASSISTANT: Samantha Wright, there are no flight services are available on this route with your preferences.

USER: No issues, thank you for the information.

ASSISTANT: Thank you for contacting us.