You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: My name is William Hall. I want to book a flight ticket from DTW to LAX. Please help me in booking a flight ticket.

ASSISTANT: Your travelling dates please.

USER: My travelling dates are from 01/09 to 01/11.

ASSISTANT: Here is a connecting flight with flight number 1006 and fare is 200, providing ticket in economy class. Shall I proceed with booking?

USER: Please proceed for booking.

ASSISTANT: Your booking is done in Southwest airlines.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.