Hi.
user
Hello, how may I assist you?
assistant
Myself Thomas Adams. 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
Nice to meet you, Thomas. Sorry Thomas, there is no reservation found on your name to change your reservation.
assistant
It's ok. Thank you for the information.
user
You are welcome.
assistant