Hi.
Hello.
This is Michelle Martinez.
How may I provide assistance to you?
I want to change my recent reservation due to prepone of my lab exams. Can you please help me in that?
Sure, please wait a while let me check in the reservation list and know you the current status.
Ok.
Thank you for your time.  Sorry, there is no reservation matching with your name in our portal to make changes further.
It is not an issue. Thank you for your service.
Thank you for opting our agency. Have a nice day.