Book appointments automatically from WhatsApp messages

flowchart TD trig>"customer sends whatsapp message"]:::trig s0["classify greeting or booking"]:::task s1["extract booking details"]:::task s2[("log appointment to sheet")]:::store s3["send confirmation message"]:::task trig --> s0 s1 --> s2 s2 --> s3 gx{"× greeting or booking request"}:::gate s0 --> gx p00["extract details"]:::task gx -->|"booking request"| p00 p01["log to sheet"]:::task p00 --> p01 p10["no further action"]:::task gx -->|"greeting message"| p10 p01 --> s1 p10 --> s1 out[/"appointment logged and confirmed"/]:::out pay{{"faster replies, fewer missed bookings"}}:::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