You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you please assist me in changing my reservation as my plan to attend a music festival got postponed?

ASSISTANT: Sure, I can help you with that. May I know your good name please?

USER: I am Christopher Campbell.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

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

USER: Ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for choosing us.