What happens if I have a flight ticket out of Thailand after 3-4 months while applying for a 30-day tourism visa extension?

The user is inquiring about the required documentation for extending a 30-day tourism visa in Thailand, particularly whether a flight ticket showing a departure after 3-4 months is necessary. The comments clarify that showing a flight ticket is not required for the extension application, and provide information about the TM6 departure card received upon entry to Thailand.