Hello.
user
Hello.
assistant
Anthony Clark here.
user
How may I aid you?
assistant
 I want to do some changes in my existing reservation because I did not get the concert tickets, so planning to travel on another date, can you please help me?
user
Sure, please wait a moment.
assistant
Ok.
user
Sorry, no reservation has been found on your name.
assistant
That's fine, thanks for your help.
user
Thank you for using our services.
assistant