Hi.
Hello, how can I be your  helping hand today?
Owing an emergence, I want to change my existing reservation. Can you help me with it?
Sure, it's my pleasure to help you. Please wait for a while.
Sure.
To check reservation, I need your name, please provide your name?
My name is Rachel Gonzalez.
OK,. We are sorry to notify that, we did not find any reservation with your name.
Ok, no issues.
Thank you for reaching us. Have a great day.