Hello.
user
Hello. How can I assist you at  this moment?
assistant
Can you help me to change my existing reservation?
user
Sure, I am happy to help you with that.
assistant
Thank you.
user
Can I  have your good name please to check your reservation status?
assistant
My name is Susan Evans.
user
Ok, please wait a moment.
assistant
Sure.
user
Sorry Susan Evans, no reservation has found under your name to change.
assistant
No problem, thank you for the information.
user
Thank you for choosing us, have a good day.
assistant