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please; kindly; pray; I beg (of you)
by all means; certainly; of course; (go) ahead; (feel) free (to); (you are) welcome (to); please (help yourself to)
here you are
to give
どうぞこちらにお座りください。
Please have a seat here.
お茶を入れたのでどうぞ召し上がれ。
I made tea, so please help yourself.
急がなくていいですからどうぞごゆっくり。
There's no rush, so please take your time.