Hello.
user
Hello. How can I help you?
assistant
I want to change my reservation due to postponed of my exam, so please help me.
user
Sure, may I know your name please?
assistant
Sure, I am Sarah Walker.
user
Please give me a moment.
assistant
Sure.
user
There is no reservation found with your given name.
assistant
No issues, thank you.
user
Thank you for choosing us.
assistant