There aren’t any availabilities for a massage before or after that time
I can’t fit you in for a massage before or after that time
We’re fully booked for massages before and after that time
Availabilities = 空き
Fit you in = スケジュールに入れる ( 予約をとる)
例えば: “Can you fit me in on Friday?” (金曜日に予約取れる?)
“I can’t fit you in” = 予約がいっぱい、又は忙しくて予約取れない。
Fully booked = 予約がいっぱい
There aren’t any availabilities for a massage before or after that time/ We’re fully booked for massages before and after that time = その前と後の時間はマッサージの空きが無い
I can’t fit you in for a massage before or after that time = その前と後の時間に予約を入れられない
日本 
