You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: May I know your name?

USER: Ok, I am Joshua Lopez.

ASSISTANT: Sorry, we did not found any reservations under your name.

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

ASSISTANT: Thank you for reaching us.