Hello.
user
Hello. How may I help you?
assistant
My name is Jack Garcia. I want to do some changes in my existing reservation. Can you help me for that?
user
Ok, wait a moment please.
assistant
Sure, I will wait for your response.
user
Sorry, there is no reservation found on your name.
assistant
That's ok, thank you for checking.
user
Thanks for choosing us.
assistant
Welcome.
user