Hello.
user
Hello, how can I assist you today?
assistant
I am Melissa Lee, help me to change my reservation as my plan to visit Houston for a vacation has been postponed.
user
Sure, please wait a moment, let me check your reservation and revert to you.
assistant
Sure.
user
Thanks for waiting, sorry, unfortunately no reservation found with provided name.
assistant
Thanks for the information.
user
Thanks for your interest, have a great day ahead.
assistant