Hello. I am Eric Harris.
Hello, how may I assist you?
I want to do some changes in the existing reservation because my friends are not able to come on the those dates, can you please help me?
Sure, just hold on Harris, I will check in our records.
Ok.
Thanks for waiting, there is no reservation found with your name in our records. May be, on that day you hadn't done your reservation properly.
That's Ok. Anyways, thank you for your help.
It's my pleasure.