You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am planning to book a ticket to meet my friend at OAK. Can you please help me out from DCA?

ASSISTANT: Sure, let me know your travelling dates?

USER: I am planning t travel on May 29 and return back on May 31.

ASSISTANT: May I know your connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Is there any class preference?

USER: Yes, I am looking for a business class.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Can you please share your name?

USER: I am Jeffrey Allen.

ASSISTANT: We found a connecting flight 10-17 in Spirit airline with fare 500 and class is business. Shall I proceed?

USER: That's fine, please proceed the booking.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you for availing us.