This dream is rich with symbolism and reflects various aspects of your life, emotions, and relationships. Here’s a breakdown of some key elements:

1. Traveling and Ticket Booking: This can symbolize your journey in life and the steps you take to achieve your goals. The delays and complications you faced while booking tickets might indicate feelings of frustration or obstacles you perceive in your current life situation or plans.
2. Homemade Idly Sambar vs. Train Food: This may reflect preferences and choices in your life. Your parents’ preference for homemade food might symbolize comfort and tradition, while your preference for train food could represent a desire for new experiences or changes. This contrast may point to a struggle between sticking to familiar comforts and exploring new opportunities.
3. Forgetting Your Phone: Phones often represent communication and connection in dreams. Forgetting your phone could indicate feelings of disconnection or anxiety about losing touch with something important in your life. It could also suggest a fear of missing out or being unprepared for something.
4. Encountering a Former Friend: This part of the dream may represent unresolved feelings or past relationships that still impact you. It suggests a desire for closure or understanding regarding how peer pressure has affected you and those around you.
5. School and Authority Figures: The school setting can symbolize learning, growth, and the pressure of expectations. The encounter with the PT sirs and your mother’s intervention might highlight your feelings regarding authority and your desire to be understood. It signifies a sense of relief when you receive support from your mother, indicating the importance of family support in your life.
6. Realization About the Phone: The resolution where you find your phone in the car could symbolize clarity and the realization that some worries you may have are unfounded. It suggests that sometimes what we fear or stress about is easily solved, and it highlights the importance of communication and awareness in your life.

Overall, this dream may reflect your current life situation, feelings of anxiety or disconnection, and the importance of relationships and support systems. It encourages you to communicate openly about your concerns and to seek clarity in situations that seem confusing. Consider what aspects of your life you may need to address or reflect upon as you move forward.