Hello, I am Gregory Davis.
user
Hello. How can I help you Gregory Davis?
assistant
Due to an emergency I need to change my existing reservation.
user
Ok. Please stay online, I will get you back with the information.
assistant
Sure.
user
Thanks for waiting. I regret that there is no reservation found by your name Gregory Davis.
assistant
OK, no matters.
user
Thank you for availing us.
assistant
Thank you for helping me.
user