You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you at this moment?

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

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your good name please?

USER: Ok, I am Andrew Martin.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: There is no existing reservation found on your name in our records.

USER: Ok, not an issue. Thank you for your help.

ASSISTANT: Thank you for reaching us.