Hello.
Hello, how may I help 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, I will help you. Can I have your name for checking the reservation?
Sure, my name is Janet Gonzalez.
Sorry to inform you, there is no reservation found with your name.
Oh, it's ok no problem. Thank you for your information.
You are welcome. Thank you for reaching us.