✈️ Travel & Hospitality · Sequence
Flight Booking Sequence
How an online travel site books a flight: fare search across airlines, seat hold, passenger details, payment and ticket issue.
Drawing diagram…
What this diagram shows
- Fares are searched across airlines through a GDS
- The fare is re-checked and held before payment
- E-ticket is issued only after payment succeeds
Prompt used
Flight booking sequence: the traveller searches flights, the booking service queries the GDS (Amadeus) for fares across airlines, the traveller picks a flight and the fare is re-priced and a PNR is created with a time-limited hold, the traveller enters passenger details and pays through the payment gateway, then the booking service asks the GDS to issue the e-ticket and emails it to the traveller.
Mermaid code
sequenceDiagram actor T as Traveller participant W as Travel Website participant B as Booking Service participant GDS as GDS / Airline participant P as Payment Gateway T->>W: Search BLR to DEL, 12 Oct W->>B: Search request B->>GDS: Availability and fares GDS-->>B: 42 flights B-->>W: Sorted results T->>W: Select 07:15 flight W->>B: Re-price and hold B->>GDS: Create PNR, hold 15 min GDS-->>B: PNR ABC123 T->>W: Passenger details and pay W->>P: Charge Rs 5,840 P-->>W: Payment success W->>B: Confirm booking B->>GDS: Issue e-ticket GDS-->>B: Ticket number B-->>T: E-ticket by email
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