You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you today?

USER: Can you  help me in booking from ORD to SEA?

ASSISTANT: Please provide your trip dates.

USER: My trip dates are Apr 9-11.

ASSISTANT: Do you need any connection limit?

USER: I am looking for a stopover flight.

ASSISTANT: Do you need any other specifications?

USER: I prefer a business class.

ASSISTANT: May I know your name?

USER: Mary Jackson.

ASSISTANT: There are no flights available on your routes.

USER: No issue, thank you.

ASSISTANT: Thank you for choosing us.