Hello.
user
Hello, how may I serve you?
assistant
I want to do some changes in my existing reservation. Can you help me for that?
user
Sure, I will help you. Please wait for a moment.
assistant
Sure, I will wait for your response.
user
May I know your name please?
assistant
My name is Edward Mitchell.
user
Sorry, there is no reservation existing on your name.
assistant
That's ok, thank you for checking.
user
You are welcome, have a nice day.
assistant