Hello.
user
Hello.
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, can you please provide your name?
assistant
My name is Nicole Martin.
user
I am sorry, there are no previous reservation with your details.
assistant
Ok, no problem, thank you for your help in searching.
user
Thank you for approaching us.
assistant
Thank you.
user