How to get the JSON object value based on a certain condition in JavaScript?

I am playing with JSON objects. And I came across a challenging situation for me:

basically I have a JSON object:

let cinfo = {
   "costing_T063623477Z":{
      "service":[
         {
            "objid":"T063637283Z",
            "serviceid":"SRV2100003",
            "servicename":"FABRICATION OF SPRINKLER & HOSE",
            "estimatedprice":"10000.00",
            "description":"sdfg",
            "laborcost":"500.00"
         }
      ],
      "othercharges":[
         {
            "objid":"T063911531Z",
            "description":"Other Expenses",
            "amount":"345.00",
            "remarks":"345"
         },
         {
            "objid":"T063906963Z",
            "description":"Sales Expenses",
            "amount":"345.00",
            "remarks":"345"
         },
         {
            "objid":"T063730836Z",
            "description":"Delivery Expenses",
            "amount":"345.00",
            "remarks":"345"
         }
      ]
   }
}

I have something that can get the values of a specific object:

Object.keys(cinfo).forEach(function(ckey) {
     cinfo[ckey].service.forEach(function(skey){
         console.log(skey.laborcost);
     })
})

Based on the object above, the console output is: 500.00

But, I want something conditional when it comes to othercharges object.
I need to get the amount based only on the description:

Something like this:

Object.keys(cinfo).forEach(function(ckey) {
     cinfo[ckey].othercharges.forEach(function(skey){
          console.log(skey.amount) //-> where "description" = "Other Expenses";
          console.log(skey.amount) //-> where "description" = "Sales Expenses";
          console.log(skey.amount) //-> where "description" = "Delivery Expenses";
     })
}

How to make it possible? Thanks.