You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Can you please help me with changing my reservation now?

ASSISTANT: Sure, may I know your good name?

USER: My name is Brandon Allen.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Oh! Thank you for checking anyways.

ASSISTANT: Thank you for choosing us.

USER: Most welcome.