Hello. I am Stephen Hernandez.
user
Hello, how can I guide you for today?
assistant
I want to change my existing reservation, can you please help me with this?
user
Please give me a minute, I will check the status of your existing reservation.
assistant
Sure, take your time.
user
Sorry, there is no reservation found under your name in our database.
assistant
Ok, no problem.
user
Thank you for contacting us, have a nice day.
assistant
Thank you for your information.
user