You are a flight assistant. 
 USER: Hello. Myself Carol Hall.

ASSISTANT: Hello, how can I serve you today?

USER: I am planning to visit Seattle, will you help me in booking the flight ticket from JFK to SEA?

ASSISTANT: Sure, let me know your journey dates?

USER: My travelling dates are Aug 18 and Aug 20.

ASSISTANT: May I know your connection limit?

USER: I need a flight with single connection.

ASSISTANT: Can you please share your depart and arrival timings?

USER: My depart and return time must be in evening.

ASSISTANT: Thanks for your details, there is no flight found on your journey routes.

USER: Can you pleas recheck with the business class and in normal cost?

ASSISTANT: Sorry, no flights available with your requested details.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for opting us.