Hello.
user
Hello, how may I oblige you today?
assistant
I am Sandra Thompson here. I need to change my existing reservation, which is done recently. Can you please help me out?
user
Sure, please wait.
assistant
Thank you for considering my request., I will wait for your positive response.
user
We are sorry to inform you that, there is no reservation found with your name.
assistant
Not a problem, thank you for the information.
user
You are welcome.
assistant