Hello, I am Thomas Campbell.
user
Hello, how may I assist you today?
assistant
I want to change my existing reservation due to postpone of my sister convocation at Houston.
user
Ok, please wait for a minute.
assistant
Could you please help me with modifying my exisiting reservation?
user
Sure.
assistant
Ok.
user
Sorry, we did not found any reservation on your name.
assistant
No, problem, thank you for the information.
user
Thanks for picking us.
assistant