You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Actually my Hockey competition is postponed, so, that I want to change a existing reservation could you help me?

ASSISTANT: Can I know your name for documentation purpose?

USER: Yes, my name is Cynthia Gonzalez.

ASSISTANT: Sorry, I didn't found any reservation basis on your details.

USER: Ok, thank you for providing the information.

ASSISTANT: You are welcome.