text: var mongoose = require("mongoose");
  var billSchema = new mongoose.Schema({
      Reserve: {
          type: mongoose.Schema.Types.ObjectId,
          ref: "Reserve"
      },
      Room: {
          type: String
      },
      Floor: {
          type: Number
      },
      Number: {
          type: Number
      },
      Price: {
          type: Number,
          default: 0
      },
      Discount: {
          type: Number,
          default: 0
      },
      Fee: {
          type: Number,
          default: 0
      },
      Others: {
          type: Number,
          default: 0
      },
      Total: {
          type: Number,
          default: 0
      },
      isPaid: {
          type: Boolean,
          default: false
      }
  });
  var bill = mongoose.model("Bill", billSchema);
  module.exports = bill;
  