You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I want to change my recent reservation. Can you help me out?

ASSISTANT: Can I know your name?

USER: I am Jeffrey King.

ASSISTANT: Please wait.

USER: Ok, take your time.

ASSISTANT: Sorry, no reservation found on your name to change.

USER: That's ok. Anyways, thank you.

ASSISTANT: Most welcome.