You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I want to change my recent reservation due to the sudden change in my plan. Can you help me?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: May I know your good name?

USER: Gary Campbell, is my name.

ASSISTANT: Please, wait.

USER: Ok, I will wait.

ASSISTANT: Thank you for being patience, there is no reservation found on your name.

USER: That's ok, not an issue. Thanks for your kind information.

ASSISTANT: Thank you.