Hi.
Hello. How may I help you?
I would like to change my reservation, can  you please help me?
Sure, I am here to help you in changing your reservation. May I know your name to check with the status?
My name is Melissa Baker.
Please wait a moment while I check with the status.
Sure.
Thank you for waiting. Melissa Baker, regret to inform that there is no active reservation found under your name to amend.
Ok, thank you for informing me.
Thank you for reaching our agency.