You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to travel from PHL to SEA. Please help me in booking my ticket.

ASSISTANT: Sure, can you please share your travelling dates?

USER: Sure, my trip dates are from 09/22 to 09/24.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a single connecting flight.

ASSISTANT: Let me know your class preference?

USER: I would like to prefer business class.

ASSISTANT: Any other requirements to be met?

USER: No.

ASSISTANT: May I know your name please?

USER: My name is Linda Campbell.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: It's ok, thank you.

ASSISTANT: Thank you for reaching us.