Hi. I am Sandra Turner.
user
Hello, how may I help you?
assistant
I would like to change my existing reservation, can you please help me in changing?
user
Sure, please be on hold.
assistant
Ok.
user
Thank you for your time. Sorry, there is no reservation matching with your name in our portal to make changes further.
assistant
Ok, not an issue. Thank you.
user
Thank you for your approach. Hope to serve you again.
assistant