Hi.
user
Hello.
assistant
I am Dennis lopez.
user
How can I render you at this moment?
assistant
I need to change my existing reservation, Can you please help me with that?
user
Sure, I will help you.
assistant
Thank you.
user
Please wait let me check the current status.
assistant
Sure.
user
Sorry  Dennis Lopez, no reservation found on your name in our data base.
assistant
Ok, no problem. Thanks for your information.
user
Thank you for contacting us.
assistant