export interface QuestionnaireData {
    courseId: number;
    arrivalTime: string | null;
    departureTime: string | null;
    maleCount: number | null;
    femaleCount: number | null;
    maleTeachers: number | null;
    femaleTeachers: number | null;
    personName: string;
    personEmail: string;
    personPhone: string;
    expectations: string;
    actualSituation: string;
    specificDiet: string;
    snacks: boolean;
    otherCourses: string;
    otherInformation: string;
    filledAt: Date | null;
    changedAt: Date | null;
    agreement: boolean;
}