fix: AI recall follow-up message repeats "Great" and buries office hours

When the AI rejects a requested time in the recall booking flow, it reused
the same "Great, what time..." template used for a fresh ask, producing an
awkward double-greeting right after a rejection, and appended office hours
as a bare fragment instead of framing them as a sentence.

apps/Backend/src/ai/recall-graph.ts

@@ -328,6 +328,29 @@ const ASK_TIME_FALLBACKS: Record<string, (dateLabel: string) => string> = {
   "Haitian Creole": (d) => `Bon, ki lè nan ${d} ki bon pou ou?`,
 };
 
+// Same follow-up question as ASK_TIME_FALLBACKS, without the leading "Great,"
+// greeting — used when it directly follows a rejection sentence, where the
+// greeting would read as redundant filler.
+const ASK_TIME_PLAIN_FALLBACKS: Record<string, (dateLabel: string) => string> = {
+  English:          (d) => `What time on ${d} works for you?`,
+  Spanish:          (d) => `¿Qué hora le viene bien el ${d}?`,
+  Portuguese:       (d) => `Que horário funciona para você em ${d}?`,
+  Mandarin:         (d) => `您 ${d} 哪个时间方便？`,
+  Cantonese:        (d) => `您 ${d} 邊個時間方便？`,
+  Arabic:           (d) => `ما الوقت المناسب لك في ${d}؟`,
+  "Haitian Creole": (d) => `Ki lè nan ${d} ki bon pou ou?`,
+};
+
+const OFFICE_HOURS_ARE_FALLBACKS: Record<string, string> = {
+  English:          "Our office hours are",
+  Spanish:          "Nuestro horario de atención es",
+  Portuguese:       "Nosso horário de atendimento é",
+  Mandarin:         "我们的营业时间是",
+  Cantonese:        "我們嘅營業時間係",
+  Arabic:           "ساعات عملنا هي",
+  "Haitian Creole": "Orè biwo nou se",
+};
+
 const CLOSED_DAY_FALLBACKS: Record<string, (day: string) => string> = {
   English:          (day) => `We're closed on ${day}s. What other day works for you?`,
   Spanish:          (day) => `Estamos cerrados los ${day}. ¿Qué otro día le viene bien?`,
@@ -450,8 +473,9 @@ async function resolveDateTime(
       Arabic:           `نحن غير متاحين في ذلك الوقت يوم ${dateLabel}.`,
       "Haitian Creole": `Nou pa disponib nan lè sa a nan ${dateLabel}.`,
     };
-    const askTime = (ASK_TIME_FALLBACKS[lang] ?? ASK_TIME_FALLBACKS["English"]!)(dateLabel);
+    const askTime = (ASK_TIME_PLAIN_FALLBACKS[lang] ?? ASK_TIME_PLAIN_FALLBACKS["English"]!)(dateLabel);
-    const hours = hoursDisplay ? ` ${hoursDisplay}.` : "";
+    const officeHoursAre = OFFICE_HOURS_ARE_FALLBACKS[lang] ?? OFFICE_HOURS_ARE_FALLBACKS["English"]!;
+    const hours = hoursDisplay ? ` ${officeHoursAre} ${hoursDisplay}.` : "";
     return { reply: `${base[lang] ?? base["English"]}${hours} ${askTime}`, nextStage: "recall_asked_time_for_date" };
   }