You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I would like to postpone my meeting to some other date. Can you please change my existing reservation?

ASSISTANT: Sure, I am here to help you. For checking your reservation status, may I know your name?

USER: My name is Jack King.

ASSISTANT: King, please wait for a while.

USER: Sure.

ASSISTANT: King, I did not find any reservation under your name in our database.

USER: Its ok, thank you for the information.

ASSISTANT: You are welcome and thank you for choosing us.