Hi.
user
Hello.
assistant
I am Sandra Parker.
user
How may I assist you?
assistant
I just want to change an existing reservation as my meeting got post pone due to some technical issues.
user
Sure, I am glad to help you.
assistant
Can you help me? Thank  you.
user
Sorry, there are no reservation found on your name.
assistant
No issue. Thank you.
user
Thank you for opting us.
assistant