You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be your helping hand today?

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

ASSISTANT: Sure, we are here to help you. May I know your good name please?

USER: Thank you. Sure, I am Samuel Brown.

ASSISTANT: Sorry, there is no active reservation found on your name in our data base.

USER: Ok, not an problem. Thank you for your information.

ASSISTANT: Welcome, thank you for reaching us.