You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Justin Parker.

ASSISTANT: Justin, how can I support you today?

USER: I had planned to attend an event, but it was changed to another place. Can you change my recent reservation?

ASSISTANT: Please wait for a moment.

USER: Ok, take your time.

ASSISTANT: Sorry Justin, no reservation found on your name in our database.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: My pleasure, have a good day.