Hello.
user
Hello, How can I help you?
assistant
My name is Charles Gonzalez. I want to do some changes in my existing reservation. Can you help me for that?
user
Sure, Please wait a second.
assistant
Sure, I will wait for your response.
user
Sorry, No reservation found on your name.
assistant
That's ok, thank you for checking.
user
Thank you for reaching us.
assistant
Welcome.
user