অধ্যায় ১৩.২ — বুকিং লাইফসাইকেল ওয়ার্কফ্লো

sequenceDiagram participant C as Customer participant A as Agent participant T as travoBooks participant G as GDS participant P as Payment Gateway C->>A: ভ্রমণ অনুরোধ A->>T: Search request T->>G: AirShoppingRQ G-->>T: Offers T-->>A: Offers (with pricing) A->>C: Quote C->>A: Accept A->>T: Create booking (HELD) T->>G: Sell from offer G-->>T: PNR + price quote T-->>A: Booking HELD A->>C: Send pay link C->>P: Pay (card) P-->>T: payment.succeeded webhook T->>T: Verify signature, idempotency T->>G: Issue ticket (OUTSIDE DB transaction!) G-->>T: Ticket number T->>T: DB transaction: ticket + JE + state=ISSUED T->>C: E-ticket email T-->>A: Booking ISSUED

sequenceDiagram participant C as Customer participant A as Agent participant T as travoBooks participant G as GDS participant Sup as Supervisor C->>A: ভ্রমণ অনুরোধ A->>T: Search + create booking T->>G: Sell G-->>T: PNR T->>T: Credit limit check alt Above approval threshold T-->>A: PENDING_APPROVAL T->>Sup: Approval request Sup->>T: Approve end T->>G: Issue ticket G-->>T: Ticket number T->>T: JE + AR posting + state=ISSUED T->>C: E-ticket T->>C: Invoice (per terms) Note over C,T: Customer pays later per net 30 etc.

stateDiagram-v2 [*] --> DRAFT DRAFT --> HELD: সরবরাহকারী confirm hold HELD --> PENDING_PAYMENT: cash path HELD --> PENDING_APPROVAL: credit, > threshold HELD --> ISSUED: credit, below threshold PENDING_PAYMENT --> ISSUED: payment captured PENDING_APPROVAL --> ISSUED: approved PENDING_APPROVAL --> CANCELLED_BEFORE_ISSUE: rejected ISSUED --> PARTIALLY_USED: কুপন used PARTIALLY_USED --> COMPLETED: সব used ISSUED --> COMPLETED: ticket flown ISSUED --> CANCELLED_AFTER_ISSUE: void/refund HELD --> EXPIRED: TTL PENDING_PAYMENT --> EXPIRED: TTL PENDING_APPROVAL --> EXPIRED: TTL