Automate hotel guest emails from booking to review request

flowchart TD trig(["scheduled check several times daily"]):::trigtime s0[("check reservation spreadsheet")]:::store s1["send daily report to staff"]:::svc s2[["process each guest reservation"]]:::mi s3[("update spreadsheet log")]:::store trig --> s0 s0 --> s1 s1 -->|"one per guests checking in or out"| s2 gx{"× guest arriving or departing"}:::gate s2 --> gx p00["send welcome email"]:::task gx -->|"arriving guest"| p00 p10["send review request email"]:::task gx -->|"departing guest"| p10 jn{"○ mark as sent"}:::gate p00 --> jn p10 --> jn jn --> s3 out[/"guests receive timely emails"/]:::out pay{{"consistent guest communication effortlessly"}}:::pay s3 --> out out --> pay classDef task fill:#e7f6fe,stroke:#34b8f0,color:#2c2a29 classDef svc fill:#f6f8fa,stroke:#7c8795,color:#2c2a29 classDef mi fill:#e7f6fe,stroke:#0079a8,color:#2c2a29,stroke-width:2px classDef human fill:#fff,stroke:#0079a8,color:#0079a8 classDef store fill:#f6f8fa,stroke:#0079a8,color:#2c2a29 classDef trig fill:#00a4eb,stroke:#0079a8,color:#fff,font-weight:bold classDef trigtime fill:#00a4eb,stroke:#0079a8,color:#fff,font-weight:bold classDef trigdata fill:#8ad4f5,stroke:#0079a8,color:#06314c,font-weight:bold classDef gate fill:#fff,stroke:#e8a23d,color:#6b4708,font-weight:bold classDef out fill:#1f9d6b,stroke:#167a53,color:#fff,font-weight:bold classDef pay fill:#06314c,stroke:#021f33,color:#fff