You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I want to book a ticket from SEA to PHL, can you assist me in booking?

ASSISTANT: Sure, may I know your planned trip dates?

USER: My trip dates are Apr 18th and Apr 20th.

ASSISTANT: Do you prefer either connecting or direct flight?

USER: I need connecting flight.

ASSISTANT: Is there any class preference?

USER: No.

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

USER: I don't have any obligation with timings, you can proceed.

ASSISTANT: Are there any other specifications?

USER: No.

ASSISTANT: Please forward your name.

USER: Karen Carter.

ASSISTANT: We found a connecting flight of fare 100 with airline Southwest and number 1007. Can I proceed?

USER: Proceed.

ASSISTANT: Your ticket has been confirmed in economy class.

USER: Thank you for booking.

ASSISTANT: Thank you for availing us.