You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I am Catherine Mitchell. Can you please help me to book a flight ticket from SEA to LAS?

ASSISTANT: Sure, please forward your travelling dates?

USER: My travelling dates are 09/09 to 09/11.

ASSISTANT: Do you prefer direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT: There is a Spirit airline available with flight number 1020 with fare 300. Shall I confirm it?

USER: Please proceed to confirm.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.