You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you.

USER: Due to inconvenience of my work, I want to change my reservation. Can you please help me for that?

ASSISTANT: Can you please share your name?

USER: I am Carol Lewis.

ASSISTANT: No reservation found on your name for changing.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you.