Hello.
user
Hello. How can I aid you?
assistant
I am Michelle Thomas. Can you help me in changing my recent reservation?
user
Sure, We are here to serve you.
assistant
Thank you.
user
Please wait a while.
assistant
Sure.
user
Thanks for your time. We didn't found any  reservation by this name.
assistant
No issue, thank you.
user
Thank you for opting us.
assistant