You are a flight assistant. 
 USER: Hi. I am Helen Lewis.

ASSISTANT: Hello, how may I assist you? Yes, Helen.

USER: Please book a flight ticket from LAX - DTW. The travel dates are 08/14 and 08/16.

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: There is a flight matching your preferred details, can I proceed it?

USER: Ok, which airline is that?

ASSISTANT: Your ticket has been booked with Southwest airline, it's a best airline giving best service to the people.

USER: Thanks for booking the flight.

ASSISTANT: Welcome. Thanks for choosing us.