Hi.
user
Hello. How may I assist 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
May I know your name, so that I can help you with that easily.
assistant
My name is William Evans.
user
Sorry, no reservation found on your name.
assistant
Ok, not an issue. Thank you for your information.
user
Ok, thank you.
assistant