interjection
thank you for coming; glad to see you
A polite, somewhat formal expression used to welcome someone who has arrived, often at a home or event. It conveys gratitude for the visit.
遠いところを、良くいらっしゃいました。
Thank you for coming all this way.
本日はお忙しい中、良くいらっしゃいました。
Thank you for taking time out of your busy schedule to come today.