Hello.
user
Hello. How may I help you today?
assistant
I am Eric Evans.
user
Nice to meet 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. I will help you with that. Please wait for some time.
assistant
That's great. Sure.
user
Sorry, there is no reservation in your name. Thank you for choosing us, have a nice day.
assistant
That's really sad. Thank you for your help.
user
Welcome.
assistant