The conversation between human and AI assistant.
[|Human|] Find the total cost of buying the items on the shopping list.
[|AI|] The total cost of the items on the shopping list would be $7. This is calculated by: 

- 2 bottles of water = $2 (2 x $1)
- 1 pack of chips = $3
- 1 pack of gum = $2

Adding up the cost of all the items; $2 + $3 + $2 = $7.
[|Human|] 
Find the total cost of buying the items on the shopping list.