Hello.
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
Sure, may I know your name please?
assistant
My name is Jennifer Lopez.
user
Ok Lopez, wait a moment to check your previous reservation status.
assistant
Sure.
user
Sorry Lopez, there is no reservation found under your name in our records.
assistant
Ok, it's alright, thank you for searching and quick response.
user
Thank you for reaching us, have a nice day.
assistant
Thank you.
user