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