You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

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

ASSISTANT: Sure, I'll definitely help you in that. May I know your good name please?

USER: Sure, I am Brain Baker.

ASSISTANT: Fine, please be on hold.

USER: Sure.

ASSISTANT: Brian, there is no reservation found under your name to do changes in that.

USER: Ok, no problem.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your information.