Hi Sandya,
Thank you so much. 


Public with sharing Class ChatBotController
{ 
  Public Class CaseOutput
  {
     @InvocableVariable(required = true)
     Public string caseStatus;
  }
  Public Class CaseInput
  {
     @InvocableVariable(required = true)
     Public string caseNumber;
  }
  @InvocableMethod(Label = 'Get Case Status')
  Public static List<CaseOutput> getCasestatus(LisT<CaseInput> caseNumbers)
  {
    System.debug('*********caseNumbers*************'+caseNumbers);
    set<String> caseNumbersSet = new Set<String>();
    //Iterate case numbers
    for(CaseInput ciRecord : caseNumbers)
    caseNumbersSet.add(ciRecord.caseNumber);
    System.debug('*********caseNumbersSet********'+caseNumbersSet);
    
    List<Case> casesList = [select id,Status from Case where caseNumber IN :caseNumbersSet];
    Map<String,String> caseMap = new Map<String,String>();
    
    if(!casesList.isEmpty()){
     for(Case caseRecord : casesList)
      caseMap.put(caseRecord.caseNumber, caseRecord.Status);
    }
     
    System.debug('*********caseMap******'+caseMap); 
     
    List<CaseOutput> orderOutputs = new List<CaseOutput>();
    
    for(CaseInput cdInput : caseNumbers)
    {
       CaseOutput co = new CaseOutput();
       co.caseStatus = caseMap.get(cdInput.caseNumber);
       orderOutputs.add(co);
    }  
    
    return orderOutputs; 
  }

}



Chat Bot not giving status as input.


Chat Bot not giving status. It displaying variable name. Cna you please help me to sort out.

I checked in performace - event logs 
I am not getting any error message.