hi
Welcome to McDonald's! What would you like to order today?
yes i like to have a coke
Sure, would you like to have any burgers?
Vanilla Shake
Perfect! Would you need anything else?
i don't need fries
Sure! I see you hate fries. Would you like to have any burgers? or desserts?
i changed  my mind please coke order
Sure, I'll get it off the order. Anything else please?
no thanks
sure, I've placed the order, please proceed to the next counter to make the payment.