You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I serve you?

USER: Please book a business class flight ticket to Seattle, WA - SEA under a fare of 5000?

ASSISTANT: Sure, can you please help me with your journey dates?

USER: 02/23 and 02/25 are my journey dates.

ASSISTANT: May I know your origin point?

USER: Washington DC - DCA is my origin point.

ASSISTANT: Can you help me with your name?

USER: Catherine Jones.

ASSISTANT: Thank you for your details. A flight with price 600 having single connection is found in Spirit airline. Shall I proceed with it?

USER: Please proceed.

ASSISTANT: Your ticket is confirmed in flight number 1000.

USER: Thanks for the help.

ASSISTANT: Thank you for reaching us.