You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you please change my reservation, due to change of my trip plan to another location?

ASSISTANT: May I know your name please?

USER: My name is Matthew Hall.

ASSISTANT: Sorry to say, there is no reservation on your name in our database.

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you for contacting us.