You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How may I help you?

USER: Due to some personal work, I want to change my recent reservation. Can you help me?

ASSISTANT: Sure, I am perky to help you. May I know your good name?

USER: James King here.

ASSISTANT: Ok, please stand by.

USER: Sure.

ASSISTANT: WE are sorry to inform you that, there is no active reservation on your name.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for choosing us.