Hello.
user
Hello, what can I do for you today?
assistant
    Can you please help me in changing my reservation?
user
Sure, let me know your name to check further in our portal?
assistant
My name is Betty Turner.
user
Sorry, no reservation found on your name in our portal to change it.
assistant
Ok, no problem. Thank you for the response.
user
Thank you for contacting us.
assistant