You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Mark King here. I'm planning to visit Los Angeles, can you please book a ticket from DTW to LAX?

ASSISTANT: Ok we are here to help you, may I know your journey dates?

USER: Sure, my planned departure and return travel dates are 29th August and 31st August.

ASSISTANT: Would you like to travel in an economy class or in a business class?

USER: I can travel in any of the classes.

ASSISTANT: There is a connecting flight-1005 with price 100, shall I book it?

USER: That's fine for me, you can proceed for booking the ticket.

ASSISTANT: Ok, your reservation is done on Spirit airlines.

USER: Thank you so much for your help in booking the ticket.

ASSISTANT: Welcome.