In order to address the "No flights found" issue with Vietnam Airlines Flight 815 from Ho Chi Minh City to Siem Reap on 22 February in TripCase, follow these steps:

1. Check Flight Status on Vietnam Airlines Website: Visit the official Vietnam Airlines website and navigate to the flight status section. Enter the flight number (VN815) and the date (22 February) to see if the flight is operating as scheduled.

2. Verify Flight Availability: Sometimes, flights may be canceled or rescheduled. Ensure that Vietnam Airlines Flight 815 is indeed available on the specified date. This can be confirmed through their official site or by contacting their customer service.

3. Update TripCase App: Open your TripCase application. Ensure that it is updated to the latest version. An outdated app may not reflect the current flight availability accurately.

4. Re-enter Flight Information: If the app is updated, try to re-enter the flight information for Vietnam Airlines Flight 815. Click on “Add flight” and manually enter the following details:
- Airline: Vietnam Airlines
- Flight Number: VN815
- Departure: Ho Chi Minh City
- Arrival: Siem Reap
- Date: 22 February

5. Double-Check Input: Ensure that there are no typos in the flight number or other details. Even minor errors can prevent the flight from showing up.

6. Contact TripCase Support: If you continue to see "No flights found," consider reaching out to TripCase customer support for clarification. They may have specific insights into your trip or account issues.

7. Consider Alternative Options: If the flight is indeed canceled or fully booked, explore other flights or airlines that could take you from Ho Chi Minh City to Siem Reap around the same date.

By ensuring all the above steps are followed, you should be able to troubleshoot the issue efficiently. If the problem persists, contacting either Vietnam Airlines or TripCase directly will provide further assistance.

How to manually update flight information in TripCase?

To manually update flight information in TripCase, follow these steps:

1. Open the TripCase Application: Launch the TripCase app on your device or access the TripCase website through a web browser.

2. Select Your Trip: From your TripCase dashboard, locate and select the trip that you want to update. This may be listed under "My Trips" or a similar section.

3. Add or Edit Flight Details:
- On the trip details page, look for an option that says “Add Item” or “Edit.”
- If you want to add a new flight, select “Add Item,” then choose “Flight.”
- If you're editing existing flight information, find the specific flight entry and look for an “Edit” option.

4. Manually Enter Flight Information:
- For adding a flight, input the following details:
- Airline
- Flight Number
- Departure and Arrival Airports
- Date and Time of Departure
- For editing, modify the necessary fields and ensure all information is accurate.

5. Save Changes: After entering or modifying the information, ensure you save your changes by clicking a save or confirm button.

6. Sync Your Trip: If there's an option to sync or refresh, do so to ensure that any updates are reflected in your account.

7. Confirm Information: After updating, double-check to ensure all details appear correct in your trip itinerary.

Following these steps will help you efficiently update flight information in TripCase. If you encounter any issues, consider visiting the TripCase Help Center for further assistance - learn more or try reaching out to their customer support for additional help - learn more.