"どう致しまして" meaning in Japanese

{
  "forms": [
    {
      "form": "どう致しまして",
      "ruby": [
        [
          "致",
          "いた"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "dō itashimashite",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "どう いたしまして"
      },
      "expansion": "どう致(いた)しまして • (dō itashimashite)",
      "name": "ja-phrase"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese phrasebook",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [
            "Terms with redundant sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "you're welcome, my pleasure, no problem"
      ],
      "id": "en-どう致しまして-ja-phrase-VdLKI07y",
      "links": [
        [
          "you're welcome",
          "you're welcome"
        ],
        [
          "my pleasure",
          "my pleasure"
        ],
        [
          "no problem",
          "no problem"
        ]
      ]
    }
  ],
  "word": "どう致しまして"
}

{
  "forms": [
    {
      "form": "どう致しまして",
      "ruby": [
        [
          "致",
          "いた"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "dō itashimashite",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "どう いたしまして"
      },
      "expansion": "どう致(いた)しまして • (dō itashimashite)",
      "name": "ja-phrase"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        "Japanese entries with incorrect language header",
        "Japanese lemmas",
        "Japanese links with redundant wikilinks",
        "Japanese phrasebook",
        "Japanese phrases",
        "Japanese terms spelled with secondary school kanji",
        "Japanese terms with redundant sortkeys",
        "Japanese terms written with one Han script character"
      ],
      "glosses": [
        "you're welcome, my pleasure, no problem"
      ],
      "links": [
        [
          "you're welcome",
          "you're welcome"
        ],
        [
          "my pleasure",
          "my pleasure"
        ],
        [
          "no problem",
          "no problem"
        ]
      ]
    }
  ],
  "word": "どう致しまして"
}