X : "Let me help you choose the menu"
Y : "thank you"
X : "would you like to order Tuna?"
Y : "thank you, but I don't like Tuna"
X : "sorry, I don't know. How about this sandwich?"
Y : "no need to sorry. Yes, I would like to order that sandwich"
X : "and for the drink, how about this Coke?"
Y : "yes, thank you. How much it cost?"
X : "5 dollar"
Y : "here you go"
X : "thank you, this is the change"
Y : "okay"