You've resolved the customer's concern or have accurately provided the expected next steps for his issue to be resolve – you are now at the end of your interaction and can be ready to close the call.
Your customer exerted effort in contacting you, so you must sincerely thank them for their time. Take the time to pause and thank them for this.
Closing Spiel
Spiel: “Thank you for taking the time to call PLDT. This is (agent’s name). Have a great day.”