Hi, I am Samuel Campbell.
user
Hello, how can I serve you?
assistant
I just want to change an existing reservation due to my exams got post pone. Can you help me in change an existing reservation?
user
Sure, please wait a while. I will check and get back to you.
assistant
Ok.
user
Thank you for your time. Unfortunately there is no reservation found with your name.
assistant
That's ok, thanks for your information.
user
Thank you for consulting us.
assistant