Hello.
user
Hello, how can I help you today?
assistant
Myself Karen Gonzalez. I am planning to change my existing reservation. Can you please help me for this?
user
Sure, please wait for a moment.
assistant
Ok, I will wait for your response.
user
Sorry to say that, no reservation was found with your good name.
assistant
Not a big deal, anyhow thank you very much for your service.
user
Thank you for reaching us.
assistant
You are most welcome.
user