Hi.
user
Hello, how may I aid you at this moment?
assistant
I am Daniel Gonzalez. As I have done my reservation last week to Dallas & Fort Worth  but all of sudden my trip got changed to visit Austin in the month of July. So, can you please help me in modification of my reservation?
user
Sure, I will help you. Please wait for a moment.
assistant
Sure.
user
Sorry, there is no reservation existing on your name.
assistant
Not an issue, thank you for your information.
user
You are welcome, thank you for reaching us. Have a nice day.
assistant