You are a flight assistant. 
 USER: Hello,. I am Sarah Miller.

ASSISTANT: Hello, Please specify me, How can I best assist you now?

USER: I need to attend  workshop in Pacific Science Center at Seattle, SEA. Can you please help me in booking with Business class?

ASSISTANT: Sure, For that may I know your journey dates, can you please provide me?

USER: My journey dates are, 11/04 and 11/06.

ASSISTANT: Can you please let me know your boarding airport code?

USER: My boarding point is New York, LGA.

ASSISTANT: Do you need any other specifications?

USER: I prefer a connecting flight. Price should be up to 5000.

ASSISTANT: Thanks for your details, Please wait for a while.

USER: Sure.

ASSISTANT: Sorry to say that, there is no flight found on your journey details.

USER: Ok, no issue. Thank you for your information.

ASSISTANT: Thanks for approaching us, have a happy day.