Hi.
user
Hello. How can I help you?
assistant
Please change my existing reservation.
user
Sure, can I know your name please?
assistant
This is Stephanie Smith.
user
Give me a moment Smith, let me check your details.
assistant
No issues.
user
I am sorry Smith, I did not find any reservation regarding your details.
assistant
OK. Thank you.
user
Thank you for contacting us.
assistant