Place it at the very start of a scam-bait edit, then follow it with keyboard typing as you pretend to look up the booking, and finish with a shocked reaction when the caller asks for payment.
About this sound
This is a short, roughly three-second spoken greeting in a flat customer-service voice, saying thank you for calling Kelsin. The polite opening clashes with the obvious scam setup, which makes it feel awkward, suspicious and quietly funny. It comes from a recorded Traveler Help Desk scam call, so the formal welcome lands as a joke rather than a real greeting.