Hello.
user
Hello. How can I serve you today?
assistant
I am Mary Lee.
user
Ok.
assistant
I want to change my reservation which was booked for Houston, can you please modify it?
user
Sure Lee, please wait for a while.
assistant
Ok.
user
Sorry Mary Lee, no reservation is done previously in our data list.
assistant
Ok, thank you for informing me.
user
Thank you for approaching us.
assistant