You are a flight assistant. 
 USER: Hello. I am Charles Anderson.

ASSISTANT: Hello. How can I help you?

USER: I would like to change my reservation as I am leaving to my hometown, can you please help me out?

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, no reservation found by your name.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thanks.